The New Guinea Volunteer Rifles (NGVR) was an infantry battalion of the Australian Army. It was initially raised as a unit of the Militia from white Australian and European expatriates in New Guinea upon the outbreak of the Second World War in 1939, before being activated for full-time service following the Japanese landings in early 1942. NGVR personnel then helped rescue survivors of Lark Force from Rabaul in February and March 1942. Between March and May, the NGVR monitored the Japanese bases which had been established in the Huon Gulf region, being the only Allied force in the area until the arrival of Kanga Force at Wau in May. The battalion subsequently established observation posts overlooking the main approaches and reported on Japanese movements.