Commissioned on November 12, 1943, at Montreal, she arrived at Halifax on November 29, worked up locally and on February 25 left St. John's for Londonderry to join EG C-4, She was employed continuously on convoy duty until late September 1944, when she joined EG 26, then forming at Londonderry. On December 17, 1944, she rescued survivors of U 1209, wrecked on Wolf Rock southwest of Land's End. Montreal remained in U.K. waters, and for short periods early in 1945 was based at Portsmouth and at Plymouth. She left Londonderry for the last time on March 12, 194.5 as escort to convoy ON.290. Arriving at Shelburne, N.S., on March 31, she completed tropicalization refit there at the end of August, then performed odd jobs out of Halifax until paid off October 15 to reserve in Bedford Basin. Sold in 1947, she was broken up at Sydney.