Commissioned as Light Fleet Carrier on 24 January 1946. She wore pennant 31 until paid off on 23 March 1948. The first of two planned for Canada's post war fleet. Unsuited for cold weather she was returned to the RN and exchanged for HMCS Magnificent when the Navy's Carrier establishment was reduced to one ship. Warrior flew Fairey Fireflies, Supermarine Seafires and Fairey Barracudas.