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Events on Sunday 5 May 1811 1
1811Battle of Fuentes de OnoroWellington halts a French relief attempt during the Peninsular WarAnglo-Portuguese forces under the Duke of Wellington repelled a French army attempting to relieve the besieged fortress of Almeida. The battle was costly for both sides and forced the French to abandon the fortress. It marked a turning point in the Peninsular War's campaign for control of the Spanish-Portuguese border.