In 1944, he did a series of War Bond tours and acted in morale shows. He assisted Coast Guard recruiting efforts by being a featured player in the musical revue "Tars and Spars", which opened in Miami, Florida, in April 1944 and toured the United States for the next year. In May 1945, Mature was reassigned to the Coast Guard manned troop transport , which was involved in transferring troops to the Pacific Theater. Mature was honorably discharged from the Coast Guard in November 1945 and he resumed his acting career.