The second siege of Badajoz (22 April – 12 May and 18 May – 10 June, 1811) saw an Anglo-Portuguese Army, first led by William Carr Beresford and later commanded by Arthur Wellesley, the Viscount Wellington, besiege a French garrison under Armand Philippon at Badajoz, Spain. After failing to force a surrender, Wellington withdrew his army when the French mounted a successful relief effort by combining the armies of Marshals Nicolas Soult and Auguste Marmont. The action was fought during the Peninsular War, part of the Napoleonic Wars. Badajoz is located 6 kilometres (4 mi) from the Portuguese border on the Guadiana River in western Spain.