28 May 1926 Coup D'état
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The 28 May 1926 coup d'état, sometimes called 28 May Revolution or, during the period of the corporatist '' Estado Novo'' (), the National Revolution (), was a military coup of a
nationalist Nationalism is an idea or movement that holds that the nation should be congruent with the State (polity), state. As a movement, it presupposes the existence and tends to promote the interests of a particular nation,Anthony D. Smith, Smith, A ...
origin, that put an end to the unstable Portuguese First Republic and initiated 48 years of corporatist and nationalist rule within Portugal. The regime that immediately resulted from the coup, the '' Ditadura Nacional'' (National Dictatorship), would be later refashioned into the ''Estado Novo'', which in turn would last until the
Carnation Revolution The Carnation Revolution (), code-named Operation Historic Turn (), also known as the 25 April (), was a military coup by military officers that overthrew the Estado Novo government on 25 April 1974 in Portugal. The coup produced major socia ...
in 1974.


Background

The chronic political instability and government's neglect of the army created opportunities for military plots. Historians have considered that the coup had wide support, including all political parties at the time except for the Democratic Party,
Portuguese Communist Party The Portuguese Communist Party (, , PCP) is a Communism, communist and Marxism–Leninism, Marxist–Leninist List of political parties in Portugal, political party in Portugal. It is one of the strongest List of communist parties, communist par ...
, the
Portuguese Socialist Party The Portuguese Socialist Party () was a Portuguese political party. History The party was founded in 1875. During its initial phase, it was heavily influenced by Proudhonism and rejected revolutionary Marxism. In 1919 the leftwing of the party ...
, the ''Seara Nova'' group, General Confederation of Labour, and the Democratic Leftwing Republican Party. In 1925 there were three failed coup attempts: on 5 March (led by Filomeno da Câmara); 18 April (inspired by Sinel de Cordes and led by Raul Esteves and Filomeno da Câmara); and 19 July (led by Mendes Cabeçadas). The plotters were mostly acquitted by a military court. Óscar Carmona, acting as military prosecutor of the 18 April plot, asked that the plotters be absolved. During the trial, Óscar Carmona famously asked:
"Why do these men sit in the defendant bench? Because their homeland is sick and orders its best sons to be judged and tried."
The leaders of the 18 April plot were sent to the Nossa Senhora da Graça Fort, where they recruited the fort's commander, Passos e Sousa, to the rebel forces. The officers decided on General Manuel de Oliveira Gomes da Costa to lead the movement, who agreed to join the plotters on 25 May. On 27 May, General Manuel de Oliveira Gomes da Costa arrived at
Braga Braga (; ) is a cities of Portugal, city and a Municipalities of Portugal, municipality, capital of the northwestern Portugal, Portuguese Braga (district), district of Braga and of the historical and cultural Minho Province. Braga Municipality ...
to launch a
coup d'état A coup d'état (; ; ), or simply a coup , is typically an illegal and overt attempt by a military organization or other government elites to unseat an incumbent leadership. A self-coup is said to take place when a leader, having come to powe ...
. The First Portuguese Republic and Prime Minister António Maria da Silva, aware of the planned coup, tried to organize resistance.


Coup

The revolution started in
Braga Braga (; ) is a cities of Portugal, city and a Municipalities of Portugal, municipality, capital of the northwestern Portugal, Portuguese Braga (district), district of Braga and of the historical and cultural Minho Province. Braga Municipality ...
, commanded by General Manuel Gomes da Costa, followed immediately in
Porto Porto (), also known in English language, English as Oporto, is the List of cities in Portugal, second largest city in Portugal, after Lisbon. It is the capital of the Porto District and one of the Iberian Peninsula's major urban areas. Porto c ...
,
Lisbon Lisbon ( ; ) is the capital and largest city of Portugal, with an estimated population of 567,131, as of 2023, within its administrative limits and 3,028,000 within the Lisbon Metropolitan Area, metropolis, as of 2025. Lisbon is mainlan ...
,
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,
Coimbra Coimbra (, also , , or ), officially the City of Coimbra (), is a city and a concelho, municipality in Portugal. The population of the municipality at the 2021 census was 140,796, in an area of . The fourth-largest agglomerated urban area in Po ...
and Santarém. Generals Sinel de Cordes, Filomeno da Câmara, Passos e Sousa, and Raul Esteves also took part in the coup, leading the provincial military forces. Initially believing he failed, Gomes da Costa announced his surrender.


Aftermath

On 30 May, President
Bernardino Machado Bernardino Luíz Machado Guimarães (March 28, 1851April 29, 1944) was the 3th and 8th president of Portugal, serving from 1915 to 1917 and again from 1925 to 1926. In 1917, Sidónio Pais, who was at the head of a military junta, dissolved Co ...
appointed
José Mendes Cabeçadas José Mendes Cabeçadas Júnior, Order of the Tower and Sword, OTE, Order of Aviz, ComA, Medalha de Comportamento Exemplar, MPCE (), commonly known as Mendes Cabeçadas (19 August 1883 in Loulé – 11 June 1965 in Lisbon), was a Portuguese p ...
as head of government and minister of every ministry and on the following day transferred his powers, as president, to Cabeçadas. On 6 June, General Gomes da Costa marched on
Lisbon Lisbon ( ; ) is the capital and largest city of Portugal, with an estimated population of 567,131, as of 2023, within its administrative limits and 3,028,000 within the Lisbon Metropolitan Area, metropolis, as of 2025. Lisbon is mainlan ...
's Avenida da Liberdade along with 15,000 men, being acclaimed by the people of the city. Five days later, on 11 June, Cabeçadas' units in Santarém demobilized. On 17 June, Gomes da Costa mobilized his units and demanded Cabeçadas' resignation. Cabeçadas resigned and transferred his powers to Gomes da Costa. Gomes da Costa then tried to get the ministers associated with Sinel de Cordes to resign. Yet, on 8 June a group of generals and colonels tried to get Gomes da Costa to accept a formal position of President, but he declined and was imprisoned on the following day. Two days later he was deported to the
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. General Óscar Carmona was appointed head of government and the Ditadura Nacional began.


Timeline

*29 May: **The
Portuguese Communist Party The Portuguese Communist Party (, , PCP) is a Communism, communist and Marxism–Leninism, Marxist–Leninist List of political parties in Portugal, political party in Portugal. It is one of the strongest List of communist parties, communist par ...
interrupted its Second Congress due to the political and military situation in the country. **The Confederação Geral do Trabalho (General Confederation of Labour) declared its neutrality in all military confrontations. **The 28.5.26 coup d'état spread to the rest of the country—influenced Mendes Cabeçadas, Sinel de Cordes and Óscar Carmona—and established the Ditadura Militar (National Military Dictatorship) against the democratic but unstable First Portuguese Republic. **The Government of Prime Minister António Maria da Silva resigned. *30 May: **The General Gomes da Costa was acclaimed in
Porto Porto (), also known in English language, English as Oporto, is the List of cities in Portugal, second largest city in Portugal, after Lisbon. It is the capital of the Porto District and one of the Iberian Peninsula's major urban areas. Porto c ...
. **The president of the republic,
Bernardino Machado Bernardino Luíz Machado Guimarães (March 28, 1851April 29, 1944) was the 3th and 8th president of Portugal, serving from 1915 to 1917 and again from 1925 to 1926. In 1917, Sidónio Pais, who was at the head of a military junta, dissolved Co ...
, resigned. ** José Mendes Cabeçadas Júnior became
Prime Minister A prime minister or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. A prime minister is not the head of state, but r ...
and President of the Republic. *3 June:
António de Oliveira Salazar António de Oliveira Salazar (28 April 1889 – 27 July 1970) was a Portuguese statesman, academic, and economist who served as Portugal's President of the Council of Ministers of Portugal, President of the Council of Ministers from 1932 to 1 ...
became Minister of Finance; however, he resigned 16 days after. *3 June: A dictatorial decree dissolved the Congress of the Republic of Portugal (National Assembly). *In addition, by dictatorial decree, the leaders of all the
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were sacked. *The Ditadura Militar banned the Carbonária. *The Ditadura Militar banned all
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. *17 June: General Gomes da Costa provoked a second coup d'état. *19 June: General Gomes da Costa became
Prime Minister A prime minister or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. A prime minister is not the head of state, but r ...
. *22 June: The Ditadura Militar instituted
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. *29 June: General Gomes da Costa became President of the Republic. *9 July: **The Ditadura Militar forced General Gomes da Costa to resign—allowing him to go into exile. **General António Óscar de Fragoso Carmona, of the conservative military wing of the Ditadura Militar, became
Prime Minister A prime minister or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. A prime minister is not the head of state, but r ...
. *15 September: A military coup d'état failed. *18 September: Another military coup d'état failed. *29 November: General António Óscar Carmona became President of the Republic. *16 December: The Ditadura Militar created a
political police 300px, East_German.html" ;"title="Vladimir Putin's secret police identity card, issued by the East German">Vladimir Putin's secret police identity card, issued by the East German Stasi while he was working as a Soviet KGB liaison officer from 19 ...
called ''Police of Information'' of Lisbon.


References

{{DEFAULTSORT:28 May 1926 Coup D Etat 1926 Coup D Etat 1926 in Portugal Conflicts in 1926 Coup d'état 1926 Coup d'état 1926 1926 Coup d'état 1926 Coup d'état Coup d'état 1926 May 1926 in Europe 1920s coups d'état and coup attempts