As its American "cousin" the T-6 (both types having been derived from the NA-16) did for many Allied Air Forces during the Second World War, the Wirraway served as one of the RAAF's main trainer types from 1939. Beside serving as a trainer aircraft they were also operated in combat roles, including as an emergency fighter. At the outbreak of the Pacific War in December 1941 Wirraways equipped seven RAAF squadrons: Nos 4, 5, 12, 22, 23, 24 and 25. A group of five Wirraways based at Kluang in Malaya for training purposes was pressed into combat against Japanese ground invasion forces; these were generally flown by New Zealanders with Australian observers, and had some successes.