28th May 1926 coup d'état
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The 28th May 1926 coup d'état, sometimes called 28th May Revolution or, during the period of Estado Novo, National Revolution (Portuguese: Revolução Nacional), was a military action that put an end to the unstable Portuguese First Republic and initiated the Ditadura Nacional (National Dictatorship) (years later, renamed Estado Novo) that would last until the 1974 Carnation Revolution.
The revolution started in Braga, commanded by General Manuel Gomes da Costa, followed immediately in Porto, Lisbon, Évora, Coimbra and Santarém. The revolution triumphed when General Gomes da Costa marched in Lisbon along with 15,000 men, being acclaimed by the people of the city.