31st Battalion may refer to: *

31st Battalion, Royal Queensland Regiment The 31st Battalion, Royal Queensland Regiment (31 RQR) was a Reserve infantry battalion of the Australian Army. Although it was officially formed as 31 RQR in 1965 the battalion can trace its lineage back to units formed in 1881 as part of the ...

, a unit of the Australian Army *

31st/42nd Battalion, Royal Queensland Regiment The 31st/42nd Battalion, Royal Queensland Regiment (31/42 RQR) is a Reserve infantry battalion of the Australian Army. One of three battalions of the Royal Queensland Regiment, it was formed in early 2008 through the amalgamation of the 31st Batta ...

, a unit of the Australian Army *

2/31st Battalion (Australia) The 2/31st Battalion was an infantry battalion of the Australian Army that served during World War II. It was raised in June 1940 and was assigned to the 25th Brigade, 7th Division. It initially served in the United Kingdom where it underto ...

, a unit of the Australian Army that was raised during World War II *

31st (Alberta) Battalion, CEF The 31st Battalion (Alberta), CEF, was an infantry battalion of the Canadian Expeditionary Force during the Great War. The battalion recruited in Alberta and was mobilized at Calgary. The battalion was authorized in November 1914 and embarked for ...

, a unit of the Canadian Army *

31st Infantry Battalion (Estonia) 31st Infantry Battalion is an Estonian Ground Force rapid reaction unit, which is based on the army reservists. The unit was in active readiness from 1 August 2008 until 31 July 2009. This unit is formed on the basis of conscripts whose conscrip ...

, a unit of the Estonian Army *

31st Engineer Battalion The 31st Engineer Battalion, known during World War II as the 31st Engineer Combat Battalion, is a combat Engineer Battalion in the U.S. Army History Origin The 31st Engineer Battalion of the United States Army was originally constituted as t ...

, a unit of the United States Army *

Combat Logistics Battalion 31 Combat Logistics Battalion 31 (CLB-31) is a logistics battalion of the United States Marine Corps. CLB-31 is the Logistics Combat Element (LCE) of the 31st Marine Expeditionary Unit (31st MEU), the only continuously forward-deployed MEU in the ...

, a unit of the United States Marine Corps

See also