Early in her career, "Pirie" operated as an escort in the South West Pacific Area, and in April 1943, was damaged off Oro Bay by Japanese aircraft. Tensions between the corvette's commanding officer and the rest of the ship's company, excaberated by the lack of leave, mail, and pay, boiled over during the repair period, and led to a strike-like mutiny by the junior sailors shortly after "Pirie" returned to service. The mutiny was poorly handled, and the commander was replaced at the end of 1943. During 1944, the ship continued to operate as a convoy escort, and undertook minesweeping duties until she was attached to the British Pacific Fleet. "Pirie" was the third RAN ship to enter Japanese waters, and was present at Japan's surrender.