81st Regiment may refer to: *

81st Regiment of Foot (Aberdeenshire Highland Regiment) The 81st Regiment of Foot (Aberdeenshire Highland Regiment) was an infantry regiment in the British Army from 1777 to 1783. It was raised in Aberdeenshire in 1777 as the Aberdeenshire Highland Regiment under the colonelcy of Gen. Hon. William ...

, a unit of the British Army, 1777–1783 *

81st Regiment of Foot (Loyal Lincoln Volunteers) The 81st Regiment of Foot (Loyal Lincoln Volunteers) was an infantry regiment of the British Army, raised in 1793. Under the Childers Reforms it amalgamated with the 47th (Lancashire) Regiment of Foot to form the Loyal North Lancashire Regiment in ...

, a unit of the British Army * 81st Infantry Regiment (Philippine Commonwealth Army), a unit of the

Philippine Commonwealth Army The Philippine Army was established on December 21, 1935, as the Army of the Philippines, with a general headquarters in Manila, and units and formations based throughout the provinces of the Philippines. The Philippine Army was initially org ...

during the Second World War from 1942 to 1946. * 81st Infantry Regiment (Imperial Japanese Army), a unit of the Japanese Army * 81st Assault Aviation Regiment, later Fighter-Bomber regiment, an aviation unit of the Yugoslav Air Force ;American Civil War *

81st Illinois Volunteer Infantry Regiment The 81st Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War. Service The 81st Illinois Infantry was organized at Anna, Illinois and mustered into Federal service on August 21, ...

, a unit of the Union (Northern) Army * 81st Indiana Infantry Regiment, a unit of the Union (Northern) Army *

81st New York Volunteer Infantry The 81st New York Infantry Regiment (aka "2nd Oswego Regiment" and "Mohawk Rangers") was an infantry regiment in the Union Army during the American Civil War. Service The 81st New York Infantry was organized at Albany, New York beginning Februa ...

, a unit of the Union (Northern) Army *

81st Ohio Infantry The 81st Ohio Infantry Regiment, sometimes 81st Ohio Volunteer Infantry (or 81st OVI) was an infantry regiment in the Union Army during the American Civil War. Service The 81st Ohio Infantry was originally organized as "Morton's Independent Rifle ...

, a unit of the Union (Northern) Army * 81st Pennsylvania Infantry, a unit of the Union (Northern) Army

See also