Sailing from San Francisco, California, 3 July 1944 for Pearl Harbor, Concise arrived 13 July for training. She swept mines at French Frigate Shoals from 6 August to 16 August then sailed to Eniwetok, arriving 28 September. Assigned to convoy escort duty until 11 August 1945 Concise arrived off Okinawa, 30 August. On 8 September she sailed to clear mines from Japanese waters in protection of occupation shipping, sweeping off Wakayama, Osaka, and Nagoya until 20 November.
Post-War Decommissioning
Concise returned to San Francisco, California, 16 December 1945 and was placed out of commission in reserve 31 May 1946 at San Diego, California. She was reclassified MSF-163 on 7 February 1955.
Awards
Concise received one battle star for World War II service.