The capture of Donostia, now known as San Sebastián, marked a significant event during the concluding phases of the Peninsular War, which lasted from 1808 until 1814. The town, strategically located on the northern coast of Spain, was a target for British and Portuguese forces aiming to push back French control in the region. Allied troops, under British command, laid siege to the town, employing artillery bombardment and infantry assaults. After a vigorous battle, they successfully penetrated Donostia’s defenses, leading to the town’s capture.Following the military success, the situation in Donostia descended into chaos. The troops, emboldened by their victory, went on a rampage, pillaging homes and businesses. This destruction was exacerbated by the tactical decisions that did not prioritize civilian safety or welfare, leading to massive property loss and discomfort among the local population. The destruction of buildings included historical landmarks and homes, which were forever altered by the war.The ultimate goal of the British-Portuguese alliance was not only to seize control of strategic locations but to also demonstrate military might against French forces that had occupied much of Spain. This event was a part of broader military maneuvers in the northern region of Spain that influenced subsequent peace negotiations and territorial claims as Europe restructured post-war.