Henry Horne, 1st Baron Horne

General Henry Sinclair Horne, 1st Baron Horne, was a British Army officer, most notable for his generalship during the First World War, where he commanded at division, corps, and field army level, rising to command the British First Army in 1916, which he held until the armistice of 11 November 1918. He was the only British artillery officer to command an army in the war.