In the siege of San Sebastián, part of the Peninsular War, Allied forces under the command of Arthur Wellesley, Marquess of Wellington failed to capture the city in a siege. However in a second siege the Allied forces under Thomas Graham captured the city of San Sebastián in northern Basque Country from its French garrison under Louis Emmanuel Rey. During the final assault, the British and Portuguese troops rampaged through the town and razed it to the ground.

Thomas Graham, 1st Baron Lynedoch was a Scottish aristocrat, politician and British Army officer. After his education at Oxford, he inherited a substantial estate in Scotland, married and settled down to a quiet career as a landowning gentleman. However, with the death of his wife, when he was aged 42, he immersed himself in a military career, during the French Revolutionary Wars and the Napoleonic Wars.