Henrique Mitchell de Paiva Couceiro leads an unsuccessful royalist attack against the First Portuguese Republic in Chaves.

The attack on Chaves, which occurred on 8 July, 1912, was a military action performed by supporters of the monarchy of Portugal in opposition to the Portuguese First Republic, which had been proclaimed two years prior.

The attack was led by Henrique Paiva Couceiro, who had campaigned in Africa and who had become the leader of the royalists. The royalists had been discreetly armed by the Spanish king, Alfonso XIII, and had concentrated their forces in Galicia.

The attack ended with a defeat for the royalist forces.

Henrique Mitchell de Paiva Cabral Couceiro (30 December 1861, in Lisbon – 11 February 1944, in Lisbon) was a Portuguese soldier, colonial governor, monarchist politician and counter-revolutionary; he was notable for his role during the colonial occupation of Angola and Mozambique and for his dedication to the Monarchist Cause during the period of the First Portuguese Republic through the founding of the Monarchy of the North.