81st Regiment

81st Regiment may refer to:81st Regiment of Foot, a unit of the British Army, 1777–1783 81st Regiment of Foot, a unit of the British Army 81st Infantry Regiment, a unit of the Philippine Commonwealth Army during the Second World War from 1942 to 1946. 81st Infantry Regiment, a unit of the Japanese Army 81st Assault Aviation Regiment, later Fighter-Bomber regiment, an aviation unit of the Yugoslav Air ForceAmerican Civil War81st Illinois Volunteer Infantry Regiment, a unit of the Union (Northern) Army 81st Indiana Infantry Regiment, a unit of the Union (Northern) Army 81st New York Volunteer Infantry, a unit of the Union (Northern) Army 81st Ohio Infantry, a unit of the Union (Northern) Army 81st Pennsylvania Infantry, a unit of the Union (Northern) Army