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Boden Fortress
Boden, Norrbotten, Sweden
Rödberget Fort, part of Boden Fortress, seen from the north. The caponier ditch and the armored turrets are clearly visible, as well as the magnificent view one has from the fort.
Type	Fortress
Built	Complete fortress: 1900–1916 Main forts: 1901–1908
Construction materials	Concrete, stone, steel
In use	1908–1998
Controlled by	Sweden
Garrison	Complete fortress: 15,000 men[1] Main forts: 2,000 men[2]
Battles/wars	None

Boden Fortress (Swedish: Bodens fästning), is a modern fortress consisting of several major and minor forts and fortifications surrounding the city of Boden, Norrbotten, in northern Sweden. While the main forts were finished in 1908, many of the supporting fortifications were not finished until the start of the First World War. Improvements were also continuously being made during, and between, both the World Wars. The last fort of the fortress was decommissioned 31 December 1998. The intended use for the fortress was to stop or delay attacks from the east or from the coast, which at the time of construction meant Russian attacks launched from the Grand Duchy of Finland. It was primarily the expansion of the railway net in Norrland, which in turn was a consequence of the rising importance of the nortern iron ore fields, that led to the increased strategical value of northern Sweden and the construction of the fortress.

All in all, the Boden Fortress was made up of five primary self-supporting forts excavated out of the bedrock in five of the mountains surrounding Boden; Degerberget, Mjösjöberget, Gammelängsberget, Södra Åberget and Rödberget. Secondary, eight fortified battery positions were constructed inbetween these, to give flanking support and to cover areas not reached by the main fort's artillery. Tertiary, some 40 bunkers for infantry troops along with dugouts and other fortifications were built to cover even more terrain. During the Second World War, more bunkers and shelters, as well as many anti-tank gun emplacements were built, and tens of kilometers of dragon's teeth in were placed around the fortress and the city itself.

[edit] Background

[edit] Central and peripheral defence

A map of the theoretical Swedish central defence system discussed and planned in the later part of the 19th century, the three proposed main fortresses marked with stars, and probable Russian directions of attack marked with arrows. Larger cities and towns mentioned in the text are also included.

The two dominating theories of how to use fortifications in the strategic perspective during the 18th and 19th century were the central fortress system (centrala fästningssystemet) and the peripheral fortress system (perifera fästningssystemet), the latter also called the cordon system. The two systems were also known as central defence and peripheral defence. The peripheral defence theory was based on building several smaller fortifications along the coast and borders of the country to meet the enemy at an early stage, while the central defence theory was meant to step by step weaken the enemy in minor skirmishes and ambushes carried out by forces supplied and supported by central fortresses not located in the front line. In short words, one theory advocated many minor fortifications built to directly engage the enemy, while the other advocated only a few major fortifications built not to directly engage the enemy, but to support the troops doing the engaging.

In the beginning of the 19th century the peripheral system—at least in Sweden—was deemed unmodern,^[3] possibly due to the extremely long border and coastline of the country, which required a lot of personell to maintain and support which would lead to high costs. The peripheral system was also meant to contain the enemy to a specific area, the coast and borders, but as time went and new tactics were taken into practice, the thin line of fortifications would be easily penetrated by the enemy forces, and when the enemy had advanced through the peripheral line, there was nothing there to stop the attacker. The central fortress system was better adjusted to defence in depth, it was not until the enemy attack had reached its culminating point that full counterattacks would be launched. The central defence had also proven effective in the Seven Years' War—used by Frederick II of Prussia—and in Napoleon's Invasion of Russia—used by the Russians.^[4] Carl von Clausewitz, in his military treatise On War, even mentioned Sweden's good conditions for this kind of war of attrition:

[edit] Fortification of Sweden

Sweden had just lost one third of its mainland, as Russia had conquered the eastern part and created the Grand Duchy of Finland out of it during the Finnish War in 1808–1809. Shortly after, in 1814, the west flank had been secured by the personal union with Norway, and after the Napoleonic Wars, the former main enemy of Sweden in the south, Denmark, was no longer any threat. The only threat left was Russia, now standing just across the border in the north, and having possession of the Åland Islands, less than 150 km from the Swedish capital Stockholm. The Swedish Navy was considered superior to the Russian in the Gulf of Bothnia, so a seaborne invasion against the coast of Norrland was not likely to happen. And even though the Russians had invaded northern Sweden via Finland in the previous war, the general opinion was that in case of a new war, their main attack would be conducted towards Stockholm and southern Sweden.^[6]

Johan Peter Lefrén, general, military theorist and secretary of the Swedish Fortification Committee of 1819.

This opinion led to the thought of finding a good rear defence area where the Riksdag and the Swedish government could move if the capital was in danger. This in turn naturally strengthened the central defence theory. The core land (kärnlandet) would be the place from where the main part of the field army would conduct its operations, supported by a few fortresses. The area between the two large lakes of Vänern and Vättern was the choice for this core land, having approximately the same border as Skaraborg County. Sweden above the province of Dalarna was not even considered to be included in this strategy.^[7] The realisation of the middle Sweden central defence system was finally made 5 February 1819 when King Charles XIV John decided that one main fortress, the central fortress, and two smaller "operational fortresses" were to be built. The central fortress became Karlsborg Fortress at Karlsborg, while the two operational fortresses meant to be located at either end of Vättern never were built due to lack of funds.

While Norrland was not supposed to be included in the central defence strategy, studies on how to defend this major part of the country were still conducted. However northern Sweden was generally considered to be a wasteland and not suited for larger military operations. The bad state of most of the roads, the many uninhabited areas, the large rivers and the very limited economical gain that the lands provided were a few of the reasons that led to Norrland being considered of very limited military interrest.^[8] The first of these studies, laid down by the Fortification Committee of 1819 (1819 års befästningskommitté)—which was largely influenced by the committee's secretary Johan Peter Lefrén^[9]—led to nothing more than the opinion that the many large rivers up north—especially the Ångerman River—would benefit the defence and that no major fortifications were to be built. In another study from 1824, colonel Gustaf Oskar Peyron suggested that it would be better to fortify positions just south of Boden—at the more northern Lule River—for example Sävast or Avan.^[10] However no major changes were made, partially due to the limited military interrest, but also because of the large amounts of money that was spent on building Karlsborg Fortress and modernizing other older fortifications in southern Sweden.^[11]

[edit] Railroads speed up planning

The location of Boden, and thus Boden Fortress, in an operational perspective, with completed railroad lines by 1895, 1902 and 1914 in different shades of gray. (Larger version)

It was not until fifteen year later, when yet another committee—the Coastal Fortification Committee of 1839 (1839 års kustbefästningskommitté)—studied the defence of Norrland, that the Swedish Army started to focus a bit more on the northern provinces.^[11] This study however mainly presented plans for middle Norrland, and the provinces of Medelpad, Ångermanland and Jämtland. These provinces had a more significant role as it was here that the main roads of Sweden started to intersect with the road network of Norway—which at this time was in a union with Sweden. The road network north of this area consisted of the large coastal road—the only major north–south road—from Haparanda and all the way through Norrland down to Gävle. All the other major roads exclusively had a southeast–northwest stretch—following the run of the large rivers—before ending up in nowhere and thus not providing any route further west into Norway and the Atlantic coast.^[9] The plans to strengthen Norrland—by building a central fortress either on Frösön outside Östersund, or closer to the coast at Borgsjö outside Ånge—once again fell flat due to lack of money and the lower priority compared to fortifications in southern Sweden.

Axel Rappe, chief of the Swedish General Staff 1882–1892 and 1899–1905, Swedish Minister of War 1892–1899, and the spiritual father of Boden Fortress.

By the 1860s, the first railway trunk lines (stambanor) in southern Sweden were completed, and by 1881, the trunk line through Norrland had reached Ånge. This, and the opening of the railway line Sundsvall–Östersund–Trondheim four years later strengthened the plans for a defensive line in the middlemost provinces of Norrland.^[12] At the same time, on the other side of the Bothnian Gulf, the Finnish main railway to Oulu had almost been completed, and would soon be of great use for the Russians to transport military personnel and supplies towards the Swedish border in case of war. Combined with the planned Luleå–Boden–Gällivare–Kiruna–Narvik railway line, this would pose a great opportunity for the Russians to fullfill their latent wish to seize control of northern Scandinavia and the Atlantic ports on the Norwegian coast. At least according to some officers—both Swedish and Norwegian—which in the second half of the 1880s noticed the increased strategical importance of northern Scandinavia and Lapland as an effect of the construction of the railway lines in the area.^[13] The stretch of the railway lines started to affect the strategical planning, and in some cases military decicions influenced the planning of new railway stretches.

Even if the northernmost stretch of the trunk line in Norrland was long since planned, it was not until 1887 and the victory of the protectionists in that year's election that the financial means and the political will allowed the completion of the railway all the way up to Överluleå, which Boden was sometimes called. The "slumbering resources and the rapid expansion"^[14] in Upper Norrland were two reasons to build a railway to the sparesly populated area; another aspect that had a big part in the decision to complete the northern trunk line was the government's takeover of the Luleå–Gällivare line which had previously been in the hands of an English company. The stretch was very lucrative, as it considerably eased the transport of iron ore from the ore fields around Kiruna and Gällivare down to the coast for further transport by boat. Another English company had in the 1860s tried to construct a combination of a railway and a canal—the English Canal—for the stretch, but went bankrupt before completing their plans. The company contracted for the new railway line experienced similar economic difficulties and the Swedish state decided to buy the nearly completed line to finish it in 1891.^[15]

The decicion to complete the railway all the way up to Boden started to spur the interrest in Norrbotten among the members of the Swedish General Staff, and the chief, Axel Rappe, conducted a survey trip to the region in 1887. His report mentioned the changed strategical options due to the railway lines on both sides of the Gulf and a need for some kind of fortification in Boden, but he also toned down the earlier thoughts on the Russian interrest in the Luleå–Narvik line. Rappe's report largely affected the future stretch of the railway line in Norrbotten, his recommendations—largely based on his and the General Staff's military planning—to not build the line along the coast, and not build it all the way to the Swedish-Finnish border at Haparanda were later followed. The report completed in 1890 by the Neutrality Committee of 1888 (1888 års neutralitetskommitté)—with Axel Rappe as one of its members—proposed a budget of 1.3 million SEK, corresponding in today's money to around 9 million USD^[16] for the construction of permanent fortifications in Boden.^[17]

[edit] Reason and decision

[edit] Why Boden?

The following year, in 1892, Rappe wrote a memorandum that more in detail explained the budget, which suddenly had risen to 4.5 million SEK, and would finance the construction of two strongpoints at Paglaberget and Åberget (see map) with a total of six long cannons, ten howitzers and eight quick-firing cannons, all in armoured turrets, along with several machine guns and bunkers, barracks and supply depots. The plan included a reserve battalion (1,000 men), an artillery battalion (600 men), an engineer company (120 men) plus supply and depot personnel.^[17] Axel Rappe's large study on the permanent fortifications of Sweden (named Underdånigt betänkande angående Sveriges fasta försvar) was published in 1892 and cemented the view that a central fortress was needed in Boden to support and supply troops gathering between the Lule River and the eastern border.

According to Rappe, there was only one threat against Sweden, Russia, even though he didn't completely rule out the possibility of a German or British attack on southern Sweden if the opportunity for that arose.^[19] But Russia was the only realistic threat and there were only two plausible cases of war against them, either Sweden got involved in a war between Germany and Russia which would feature southern and central Sweden as the battleground—and Rappe made no attempt to hide which country the General Staff wanted Sweden to side with in that case—or Russia would make a limited attack on Norrbotten to reach northern Norway and the Atlantic—an attack he earlier said was not very likely. Rappe probably said that to get more focus on the importance of the railway line to Boden—which was under discussion at that time—and he thus hoped that it would speed up its completion.^[20] A railway line to Boden was of utmost need to be able to bring up troops to Lule River—the main line of defence—and a future fortress there.

The following years a fierce debate raged between the supporters of the army on one side and the navy on the other. The proposed expansion of several of the Swedish fortifications, which in turn would see less money spent on the fleet had upset many naval proponents, amongst them Wilhelm Dyrssen—later Minister for Sea Defence—and Herman Wrangel, but also Fredrik von Otter—later Admiral and Prime Minister of Sweden.^[21] However the debate did not result in anything, and a request of 500,000 SEK to initiate construction of the fortress was not accepted by the government. Instead, they wanted a committee to further investigate all Swedish fortifications and possible new constructions of such. Thus the Fortification Committee of 1897 was formed. The committee, led by chairman Jesper Crusebjörn, discussed and examined the defence of Norrland very thoroughly, which included a travel to Boden and climbing several of the heights and mountains that were considered for the fortifications. Even the chairman which—according to assistant secretary Melander—had "a pretty extensive corpus to carry around, did not fear toil and in own person climbed, even though slowly, the highest of all the mountains."^[22] The selection of Boden as the most suitable place for the fortification, according to the committee's final report published July 25, 1898, had several reasons:

• The rail trunk line through Norrland crossed Lule River there.
• The intersection of the trunk line and the Luleå–Narvik line was located there.
• The most important road intersection in Norrbotten was located there.
• The most suitable river crossing sites over Lule River were located there.
• The distance to the coast was long enough to prevent a surprise attack by a naval landing force.
• The topography of the area was suitable for a modern fortress.^[23][24]

[edit] Final decision

A 1903 proposal for how the fort at Röderberget could look. Prominent features include the four armoured turrets for 15 cm howitzers, and the deep caponier ditch around the fort.

The report calculated the costs to 8.7 million SEK—the same sum that Axel Rappe had proposed in 1896—which corresponds in today's money to around 60 million USD,^[16] spent over a total construction time of ten years—partitioned into one four-year period and two three-year periods. The cost was still considerably lower than the cost of many of the recently built or modernised fortifications on the continent, Belgium had spent the equivalent of 62 million SEK on the fortifications along the Meuse, and Romania had spent around the same to strengthen the defence of Bucharest.^[25] In 1899, Rappe proposed to the Swedish Riksdag—in line with the plans of the Fortification Committee—that construction of already existing fortificatory works in Sweden would commence, while the question on Boden would be postponed to the next year. Gaining support from the first chamber but not from the second chamber, the joint vote decided, and the result was in favor of the proposition. Even though the result did not really mean anything concrete for the possible construction in Boden, many considered this a great success for that question as well.^[26] During the last years of the century, the Riksdag's general attitude towards the army became more positive, most likely due to the increased Russification of Finland, increased tention in the Union and rumors that the Russian sawfilers working in Sweden also worked for the Okhrana, the secret Russian police.

Erik Gustaf Boström, Prime Minister of Sweden at the time of the Riksdag's decision to construct Boden Fortress.

Despite the positiveness, Axel Rappe left as Minister of War in 1899, due to a number of setbacks in other questions. He was replaced by Jesper Crusebjörn which thus was given the tough task of finishing the Boden question.^[26] Crusebjörn, following in the footsteps of Axel Rappe—who has later been referred to as "the spiritual father of Boden Fortress"^[27]—followed the Committee's plan and proposed that the Riksdag should allocate an initial sum of 560,000 SEK^[28] which would be used to initiate construction of Boden Fortress. Crusebjörn also maintained the belief of his predecessor and of the committee in which he was chairman, that Boden Fortress when completed should act as the operational base for all troops attached for the defence of Norrbotten, that it should serve as a supply fortress for troops stationed between it and the front line, and that it, also should serve as a blocking fortress in case of a Russian surprise attack. The 1897 committee also had set the goal to have Boden Fortress in a finished state when the trunk line through railway found its way through to the border against Finland.^[29]

The result of the votes—held May 7, 1900,^[30] a date which can be seen as the birth of the fortress—in the first and second chambers were the same as the previous year. The result in the fist chamber was overwhelming, 108–16 for the proposal, but the proponents feared a defeat in the second chamber. During the debate both the current Prime Minister of Sweden Erik Gustaf Boström and Jesper Crusebjörn threatened to resign from their posts if the proposal was not accepted, to exert pressure on the second chamber. Boström expressed the following that day:

Even after this, the second chamber voted against the proposal, with a vote count of 73–130. Neither Boström nor Crusebjörn resigned, since it after further discussion and voting was decided that the matter should be decided by a joint vote. The first chamber voted in favor, 125–14, while the second chamber voted against, 87–135, with a total outcome of 212–149 in favour of constructing Boden Fortress and allocating the funds needed to start construction. It should be noted that funding for the purchase of the land that the fortifications were to be built on to a large part already had been provided several years in advance by two voluntary organizations—the Organization for the Fortified Defence of Upper Norrland (Föreningen för Övre Norrlands fasta försvar) and the Swedish Women's Organization (Svenska Qvinnoföreningen)—that had collected 71,000 SEK out of the 131,000 SEK needed for land purchase.^[32][33]

[edit] Construction

[edit] Initial work

Workers taking a break from their blasting duties during construction of one of the forts.

The main inspiration for the design of the forts—being blasted into the mountains rather than constructed on top of them—came from Vaberget Fortress near Karlsborg Fortress. Vaberget Fortress was built in the 1890s and its southern fort was the first fort in the world that fully used the protection provided by the bedrock itself by having all of its functions embedded in the mountain.^[34] Vaberget Fortress served as a prototype for Boden Fortress and many more future fortifications in Sweden, including the late 20th century fixed army and coastal artillery batteries that gave the Swedish Fortifications Administration world renown.^[35] Preparatory work was started in 1900 and consisted of a diverse number of tasks, ranging from purchase of beds for the construction workers, construction of a new loading site for the railway, building roads to the various construction sites and clearing the land of those sites. The plan for the Fortifications at Boden (Befästningarna vid Boden)—which was the term used until the First World War when the present name Boden Fortress came into widespread use^[36]—was largely based on the proposal laid forward by the Fortification Committee of 1897, with only minor modifications.

A view down a ditch at one of the forts. Equipment used during the construction can be seen. The picture below is a closeup of what is located at the far end of this ditch.

Already before any construction work had started, the cost of the forts had been estimated to exceed the previous calculations by 50 % and in December 1901, only few months after the first blasting work that had been done at Gammelängsberget in July 1901, the cost for the four forts to northeast of the river was expected to be 65 % more expensive than the initial calculation.^[37] The blueprints of the forts at Degerberget, Gammelängsberget and Södra Åberget were the first to be confirmed, which happened on 11 May 1901. The fort at Mjösjöberget followed suit on 3 April 1902 and the last fort to get a confirmed blueprint was the fort at Rödberget, on 19 May 1903. The last proposed fort, at Paglaberget, was deleted from the plans in 1906—along with the batteries at Fällberget and Slumpberget as well as the fortifications at Avan and Svartbyträsket—before any work on the fort had started, due to the proposal of the new Fortification Committee of 1905, which was formed following the reports of the large rise in costs.^[38] On 9 February 1906, the current Minister of War Lars Herman Tingsten calculated the total cost to end at 19,220,000 SEK, more than twice the cost reported by the 1897 committee.^[39]

All work on the large masses of bedrock was conducted by hand, without any help of powered machines. The first work that was done at the site was to create a large ditch, 9–12 m wide and width a depth of 6 m or more, that would surround the core of the fort. Creating patrol trenches and placements for the turrets on the top of the forts was also work done early on. The teams of workers would first bore down in the bedrock using pinch bars and sledgehammers, then use dynamite to blast the rock into manageable pieces which could be transported away from the site, using wheelbarrows, horse-drawn carriages and in some cases Decauville railways. When the ditch, or parts of it, had been completed, work started on the inner part of the fort by boring horizontally from the bottom of the ditch into the mountain itself. This work was a lot harder—the cost for each cubic metre of blasted tunnel was five times the cost of a cubic metre of blasted ditch—both due to the confined space in the tunnels and the risk of damaging the bedrock. Dynamite was replaced by black powder which reduced the risk of doing so but it also increased the time needed to complete the tunnels.^[40] All in all, the amount of bedrock bored, blasted, loaded and transported away from the forts has been estimated to be between 250,000 m³ and 350,000 m³.^[41]

[edit] Finishing touch

One of the counterscarp galleries at Rödberget Fort. 57 mm caponier cannons (kaponjärkanoner) and machine guns were stationed behind the green armoured hatches, ready to fire at any intruder in the ditch.

When the ditches and tunnels were finished, concrete works started, including flooring, construction of joist systems if a second floor inside the fort was wanted, staircases, partition walls and counterscarp galleries. Water wells were bored to a depth of several hundred meters to guarantee water supply since the forts were supposed to be self-supporting.^[42] However, the most demanding part of the project was the construction, transport and installation of the armoured turrets and the armament itself. Two companies had been previously contracted for the construction of other fortifications in Sweden, Swedish AB Bofors-Gullspång and French Compagnie des Forges de Châtillon, offers from both companies existed already in 1901, but it was not until after tests conducted in December 1902 that the Swedish company was contracted and given royal approval on 26 May 1903. The order was for the 8.4 cm and 12 cm pieces that was to be mounted on the first three forts. The following two forts at Rödberget and Mjösjöberget were to have 15 cm pieces, an order Bofors would get as well, but due to the time factor a few of those were actually delivered by the French company.^[43]

Horse and sleigh was used to transport the turrets to their final destinations.

The cost of a single armoured turret for a 12 cm piece was almost 100,000 SEK—around 700,000 USD in today's money^[16]—and it could weigh as much as 100 tonnes. It was delivered in parts to simplify transport, but the heaviest part still had a weight of 26 tonnes. The parts were delivered by rail up to Boden and unloaded with the help of gantry cranes. As the roads of the time could not handle the weight during summer, transport had to wait until winter when the frost had hardened the ground. The turret parts were lifted onto sleighs drawn by 16–30 horses depending on the situation. The toughest strech, up the mountain, was handled with the help of block and tackle, the ditch was crossed on temporarily built sturdy wooden bridges and the mounting of the turret was finished with cranes. A major part of the mounts for the turrets were completed by the end of 1905, despite the harsh winter working conditions, with temperatures falling below −40°C from time to time.^[44] The peak workforce amounted to around 900 men,^[45] but was fluctuating with the lowest number of active workers during the winter months. The first artillery test firing was conducted on 15 January 1907 when the guns at Gammelängsberget fired their first rounds,^[42] and all five forts "were in a defensible state" by 1908.^[46]

[edit] Other fortificatory works

One of many concrete bunkers built all around Boden, this one is located on the west slope of Rödberget. Only a short part of the so called "sausage" and some of its rifle loopholes can be seen here, this particular bunker is about 50 m long in total.

Apart from the forts, the garrison itself was heavily expanded during the initial construction years and became one of the largest garrisons in Sweden, still at the start of the 21st century Boden was the largest garrison city in the Swedish Army. Still, no other fortifications than the forts themselves were finished by 1908, and work now started to fill the holes inbetween them. It was realized that prepared positions were needed for the mobile batteries, and apart from those, three larger battery positions (sometimes called fästen, strongholds) were also constructed at Leåkersberget, Norra Åberget and Svedjeberget. These works were started in 1911 and were finished during the First World War. The last of the three strongholds was positioned in the mountain itself with embrasures in the mountain side,^[47] and Leåkersberget had parts of the battery position inside the mountain, but the gun emplacements outside—the other positions were concrete fortifications above the ground, some inside a bunker, and others behind a parapet.

The main fortifications for infantry consisted of 44 concrete bunkers, 23 dugouts and 26 fortified observation posts.^[48] The concrete bunkers (infanteriskansar, redoubts) were long and narrow, the longest, Abramsskansen, was 155 m long and had room for 160 men and four machine guns, but most had room for less than 80 men—usually a rifle platoon reinforced with a machine gun section and an anti-tank section.^[49] Due to their length, their curved shapes following the mountain sides, and other characteristics, the bunkers were popularly referred to as "sausages" (korvar). The construction of these started in 1911. Many officers still considered the fortress to have inadequate and to few fortifications for the infantry, and one officer compared the fortress to "a shoe, which is to large for the foot."^[50] 1 million SEK was allocated in 1915 to fix that problem, and many minor fortifications were built during the First World War. Blockhouses were also built by the railway bridge at Trångforsen and the—during 1911–1912 built—road bridge Hedenbron located just 1½ kilometres southeast of the Trångforsen bridge. The later was built to accommodate easier access to Rödberget Fort and the military training area on the southwestern shore of Lule River and was at the time of completion the longest single span road bridge in Sweden.^[51]

The first balloon of the garrison, used for artillery observation and reconnaissance, seen during an exercise in 1914.

Both internal and external communication systems as well as means of reconnaissance were needed, both directed by the commandant located in the headquarters building. The building—finished in 1910—had three floors, the upper two functioned as home and workplace for the commandant and the chief of staff, while the ground floor had extra thick walls and functioned as command post for the fortress.^[46] A large field telephone network was built, connecting all forts with the headquarters. Liaison with higher commands was at first maintained by regular post, telegraph and telephone. The fortress' radio station was finished by 1914 and was located south of Degerberget on a bog now known as the "Radio Mire" (Radiomyren). The fortress also had homing pigeons for sending messages. At the end of the Second World War, around 280 such pidgeons were stationed in Boden. The pidgeons were part of the balloon department whose main task was to operate the balloon of the garrison. For this, a hangar with inner measurements of 35×10×10 m was built near the radio station. More than fifty men were attached to the department, of which two could follow the balloon up to its maximum height of 1,000 m, limited by the length of the wire connecting it to the ground. The hydrogen-filled balloon itself was of German make and measured 27 m in length, had a diameter of around 7 m and a total volume of 750 m³. ^[52]

[edit] Never in use

[edit] Two World Wars

Soldiers of the early interwar period, second from the right an artillery private in battledress.

Most parts of the fortress were finished during the First World War, and many minor works were started and completed during the course of the war. Even though Sweden remained neutral during the two World Wars, the start and outcome of both had large impact on the fortress. Finland declaring its indepencence during the First World War created a buffer state between Sweden and Imperial Russia's successor state, the Soviet Union, which radically changed the strategic value of Northern Sweden, and questioned the usability of Boden Fortress. Only the most necessary needs were satisfied during the interwar period, even apparent needs—based on the experiences from the war—such as better air defence and fortifications to halt or temporarily impede attacks by armoured forces were neglected. Thanks to local commanders, construction of new fortifications and improvements to already existing ones were done with the help of garrisoned troops. Engineer companies built new shelters and trenches as training, and the telephone network was improved and completed by the garrisoned telegraph company. This cut the cost drastically as the only expenditure was the needed material.^[53]

King Gustaf V visited the fortifications and put his autograph at one of the ditch walls of Rödberget Fort on 16 July 1921.

Only a few necessary projects were funded, including an underground headquarters bunker, improvement of the garrison hospital and new training areas. It was not until the increased tention in Europe following Adolf Hitler's rise to power, Benito Mussolini's March on Rome and the outbreak of the Spanish Civil War that focus once again was put on military readiness and prepared fortifications. Several improvements were made to fortifications in many parts of Sweden during the last years of the 1930s following the German annexation of Austria and occupation of Czechoslovakia. In Boden, this included building underground storage rooms for ammunition and food, replenishing already existing stocks, increasing protection for other important supply functions—such as the waterworks—as well as further military planning and also preparations for destruction of—for an advancing enemy—important bridges and roads.^[54]

In the distance a line of dragon's teeth made of stone, about one kilometre west of Rödberget Fort.

When the Second World War broke out, only limited resources where allotted to the defence of Northern Sweden, but following the Soviet attack on Finland a few months later and the German Operation Weserübung against Norway and Denmark the next year, major work on improving and extending the defensive lives was commenced. Many bunkers, bomb shelters, gun emplacements—particularly for anti-tank guns—were built by the units that had been mobilised and stationed in the vicinity of Boden. The Finnish experiences gained from meeting superior armoured forces during the Winter War were adopted in Sweden, and triple rows of large stones or blocks of reinforced concrete, dragon's teeth, soon formed a continuous line—defended by anti-tank guns in concrete bunkers and machine-gun nests—around the fortress and city. As the war continued and advances in most fields of warfare were made, Boden Fortress was continually improved to meet new or increased threats such as air, armoured or gas attacks. The command, supply and intelligence services were improved as well.^[55]

[edit] Espionage

The Russian sawfiler Peter Alexandrovich Boboshkin from Nizhny Novgorod Governorate travelled through northern Sweden, from Kiruna to Hudiksvall in the spring of 1910, and passed through Boden. When this picture was taken in March that year (location unknown), he had placed his filing machine on military territory.

Strict secrecy surrounded the fortress for a very long time, and there were several attempts made by foreign powers to gain knowledge of various kinds of information. One early possible attempt at espionage were the Russian sawfilers who travelled through Sweden, mostly in Norrland during the last years of the 19th century and the years leading up to the First World War. A large part of the Swedish population believed that the sawfilers, no more than 300 in total in Sweden, were spies hired by the Okhrana, the Russian secret police. While some sources are of the belief that the sawfilers were never sent out on specific missions—but instead acted as unknowing spies—only having contact with the Okhrana who interrogated them regarding their experiences when they returned to Russia,^[56] other sources claim that at least some of the sawfilers that the Okhrana found most useful were educated in the art of espionage, and were in fact given specific missions, as well as being paid 300 rouble per season for their work.^[57] Another form of this kind of legal espionage is believed to have been conducted by the German Wandervogel movement during the late interwar period.^[58]

The first known attempt of purposeful espionage against the fortress was conducted in 1913–14. A former lieutenant in the Danish coastal artillery, A. B. Fredrikssen, was enlisted in Copenhagen by the Russian military attaché in Stockholm, colonel Assanovitch. Fredrikssen was sent to Boden with the task to explore the fortress and its surroundings. He and his wife stayed at a boarding house in the city, and had regular correspondence with his employer who stayed in Copenhagen. It was also the correspondence that exposed the attempt, which was not very successful in terms of information gained by the Russians. They had better luck in late 1914 with two brothers named Hiukka, who both served with one of the artillery regiments in Boden, Norrlands artilleriregemente. They were discovered due to their extravagant living, and it was found out that of the brothers—despite his employment in the army—had Finnish-Russian citizenship. They had provided intelligence to Russia, but the full extent of the affair was never disclosed.^[59] A minor case of German espionage was exposed during the Second World War. The first permanently stationed German officer in Luleå, a Hauptmann Schultz, was caught in the act photographing parts of the fortifications, and was deported. It is probable that his espionage was not ordered from any higher command, but was rather an act on own initiative.^[60]

Two extensive espionage cases in Sweden during the Cold War involved Boden Fortress, both exposed in 1951. The first case involved Fritjof Enbom, a former worker at the Swedish State Railways in Boden, and later as local editor for the communist newspaper Norrskensflamman. He was exposed by his own careless talk—often under the influence of alcohol—to the owners of the house in Stockholm where he had lodged since he moved there from Boden. The family told the Swedish Security Service after the Christmas holidays of 1951, and Enbom was arrested on 16 February 1952. During interrogation, he confessed that he—from February 1943 to April 1951—had met with Soviet employers around 25 times. Enbom had provided a large variety of intelligence, most of it from public sources, but also secrets, of which the armament of one of the forts in the fortress was one of many pieces of information that concerned Boden Fortress and nearby fortifications.^[61] He was sentenced to lifetime hard labour, but was released after ten years. The other case involved Ernst Hilding Andersson, who was arrested on 21 September 1951. He had carried out seven missions for the Soviets and had provided them primarily with information regarding the Swedish Navy, but also information on the fortifications along the Norrland coast, and an initiated report about Boden Fortress and the airforce unit located in Boden and Luleå, Norrbottens flygbaskår. Andersson was, like Fritjof Enbom, sentenced to lifetime hard labour.^[62]

[edit] Cold War and myths

Two of four armoured turrets for the 12 cm cannons (replacing the 15 cm howitzers in 1976) on top of Rödberget Fort.

The fortress was gradually modernised in the decades following the Second World War, including newer main artillery for some of the forts and newer secondary artillery for all forts as well as other improvements. But the development of new weapons and the evolution of warfare during the Cold War gradually decreased the importance of the fortifications. Weapons such as cruise missiles and smart bombs dealt the death blow to Boden Fortress when they demonstrated their worth during the Gulf War in 1991.^[63] Mjösjöberget Fort had been decommissioned and removed from the wartime organisation twelve years earlier in 1979, and less than ten years after the Guld War and the collapse of the Soviet Union, the four other forts had followed suit. The last shot was fired from Rödberget on 14:11 local time on 31 December 1997,^[64] and exactly one year later, on 31 December 1998, that last fort was decommissioned after 90 years in service. All five forts and three battery positions—Leåkersberget, Norra Åberget and Södra Slumpberget—have been declared historic buildings and are to be preserved for the future. Two forts, Rödberget and Södra Åberget are held in operation, and the former is used for guided tours as well as for smaller conferences.

[edit] Forts

[edit] Degerberget

Map of the location of the individual fortifications and batteries, railroad lines, and the size of Boden in 1901 (black) and 1940 (dark grey). (Larger version)

[edit] Mjösjöberget

[edit] Gammelängsberget

[edit] Södra Åberget

[edit] Rödberget

Forts and batteries at time of completion:

[edit] In media

Boden Fortress is mentioned in Tage Danielsson's Tale of Karl-Bertil Jonsson's christmas, the story was made into a short film in 1975 and has been shown on Swedish television every Christmas Eve since that year. Karl-Bertil Jonsson, working extra at the post office, steals christmas gifts which are addressed to rich people and then give them to the poor, Robin Hood-style. One of all the gifts he steals is a matchstick picture (tändstickstavla) of the fortress. When telling the intended receiver of the gift, senior administrative officer H. K. Bergdahl, what he had done Bergdahl answers "Thank you, my lad, for sparing us of Boden Fortress!"^[66]

The fortress also plays a part in Operation Garbo, a three-volume novel written by Harry Winter, a pseudonym for an undisclosed number of people. The techno-thriller novel is about a Soviet invasion of Sweden, and while Boden Fortress is not a main part of the story, one chapter in the first volume briefly mentions Åberget fort,^[67] and two chapters in the second volume are devoted to events at and around the forts, Åberget and Mjösjöberget Forts are mentioned by name while Rödberget Fort is described more in detail.^[68]

[edit] Gallery

View of the terrain looking west from the Rödberget Fort.	Looking southwest from Rödberget Fort, silhouettes of industries in Luleå some 30 km away can be seen.	A sleeping hall inside a fort, in the early days, the beds were positioned even more tight together.	Södra Åberget Fort, seen from Rödberget Fort across Lule River.
Parts of Boden and Lule River seen from Rödberget, as well as the Mjösöberget and Gammelängsberget Forts on the mountain in the background.	A mortar emplacement on top of a fort, mortars were used for close defence against enemy infantry.	The kitchen of Rödberget Fort that prepared food for the whole fort crew.	One side of the ditch around a fort seen from above.
The command room of one of the forts.

[edit] See also

• Swedish Armed Forces
• Karlsborg Fortress
• Rail transport in Sweden
• Sweden during World War II

[edit] References

[edit] Notes

[edit] External links

• Swedish National Property Board - Boden Fortress (English)
• Rödbergsfortet (Swedish)
• Bodens fästning - Nordens største bjergforter (Norwegian)
• Satellite images at Eniro.se: Rödberget Fort - Södra Åberget Fort - Gammelängsberget Fort - Mjösöberget Fort - Degerberget Fort

[edit] Help

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• First shots in 1907 (Gammelängsberget).
• Last shots around 14:30 new years eve 1997
• Gold reserve 40s-80s, up to half of the reserve. At most 140-150 tons
• Check runeberg.org for sawfiler picture

During the 20th century the fortress was a top secret installation and neither the size nor the extent of the fortress was public knowledge. large fortess constellation. the building cost for these underground installations was astronomical. and until the 1960s parts of the Swedish gold reserve was held at there. The last shots from the artillery cannons were fired in 1997 and in 1998 the entire fortress was decommissioned. Some of the forts are today open to the public as tourist attractions.

[[Category:Fortresses in the Swedish Realm]] [[Category:Norrbotten]]