Commissioned at Port Arthur on September 30, 1944, Rockcliffe arrived at Halifax on October 30 and proceeded to Bermuda to work up. Upon returning to Halifax in mid-December she was assigned to EG WL 6 until June, 1945. She escorted the surrendered U 889 part of the way to Shelburne, N.S., on May 10w 1945. Paid off to reserve at Sydney on July 28, 1945, she was recommissioned for passage to Esquimalt, where she arrived on December 21, 1945. On January 14, 1946, she was again paid off into reserve, but was recommissioned on March 3, 1947, to serve as a training ship. She was finally paid off on August 15, 1950, and scrapped ten years later.
After 1949 Recommissioned as Pendant 173.