The Battle of Puerto de Baños (12 August 1809) saw a Portuguese-Spanish column led by Robert Wilson attempt to defend a mountain pass against Marshal Michel Ney's VI Corps. After a nine-hour combat, Wilson's force broke up and scattered into the mountains. Baños de Montemayor is located about 45 kilometres (28 mi) northeast of Plasencia, Spain. The clash occurred during the Peninsular War, part of a larger struggle known as the Napoleonic Wars.