At the final stage of the Peninsular War, British-Portuguese troops capture the town of Donostia (now San Sebastián), resulting in a rampage and eventual destruction of the town.

The Peninsular War (1808–1814) was fought in the Iberian Peninsula by Portugal, Spain and the United Kingdom against the invading and occupying forces of the First French Empire during the Napoleonic Wars. In Spain, it is considered to overlap with the Spanish War of Independence.

San Sebastián, officially known by the bilingual name Donostia / San Sebastián, is a city and municipality located in the Basque Autonomous Community, Spain. It lies on the coast of the Bay of Biscay, 20 km from the France–Spain border. The capital city of the province of Gipuzkoa, the municipality's population is 188,102 as of 2021, with its metropolitan area reaching 436,500 in 2010. Locals call themselves donostiarra (singular) in Basque, also using this term when speaking in Spanish. It is also a part of Basque Eurocity Bayonne-San Sebastián.

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.

September 8 is the 251st day of the year in the Gregorian calendar; 114 days remain until the end of the year.