Battle of Fuentes de Oñoro

The battle opposed Masséna, attempting to relieve the French garrison besieged at Almeida, to Wellington, firmly entrenched at Fuentes de Oñoro. After two days of skirmishing, Masséna launched a massive attack on 5 May. Despite initial success on the British right flank, allied resistance held. The French army withdrew without breaking the blockade.

Masséna, retreating from Portugal, wished to rescue the Almeida garrison before it fell. Wellington had strengthened his defensive lines along the Dos Casas River. It was one of Masséna's last major engagements in Iberia before being relieved of command.

Masséna attempted a turning attack with Loison's and Montbrun's corps. The British flank was temporarily pierced, but allied reserves (including the Light Brigade) stabilized the line. The French lacked coordination to exploit their breakthrough.

The Almeida garrison was forced to break out shortly afterward. Masséna was recalled to Paris and replaced. Wellington consolidated his position in western Spain. The battle reinforced the reputation of the Anglo-Portuguese army.