The 2/9th Cavalry (Commando) Regiment was one of three commando regiments raised by the Australian Army for service during World War II. It was originally raised in 1940 as an armoured cavalry unit as part of the 8th Division, before being transferred to the 9th Division. Between 1941 and 1942 the regiment saw action in the Middle East before being withdrawn to Australia in early 1943. At this time the regiment was re-organised as the administrative headquarters for the 2/4th, 2/11th and 2/12th Commando Squadrons and it was converted into a commando regiment. Later in 1945 the unit saw action during the landings on Tarakan on Borneo before being disbanded upon the cessation of hostilities.