The Battle of Ali Masjid, which took place on 21 November 1878, was the opening battle in the Second Anglo-Afghan War between the British forces, under Lieutenant-General Sir Samuel James Browne, and the Afghan forces, under . The perceived offence of an Afghan general's refusal to allow a British envoy entrance to the country was used as an excuse to attack the fortress of Ali Masjid, as the opening battle in the war. Despite numerous setbacks, including half the troops getting lost or delayed and missing the battle entirely, the British were lucky that the Afghans abandoned their position overnight.