Torres Strait Force was a military command unit of the Australian Army during the Second World War. Reporting directly to the First Army and consisting of infantry, artillery, anti-aircraft, engineers, medical and logistics units, it was responsible for the defence of the islands of the Torres Strait, to the north of the Australian mainland. It was formed in September 1942 under the command of Colonel H.R Langford through the redesignation of "Thursday Island Fortress".