After attending Aircraft Armament School in Denver, Colorado (Lowry Field) and Briggs Advanced Power Turret School in Detroit, Michigan, Rene left the United States for Europe on 17 July 1943 arriving on 21 July. He then served for 30 months with the Base Air Depot Number 2 in England and also served in France and Germany. He inspected, repaired and did modification work on aircraft power turrets and bomb bays. During the course of inspection and repair, every spot of the equipment at hand was so conditioned as to assure the maximum performance of the equipment. Small hand tools were used. He departed Europe for home on 9 December 1945 arriving on 22 December. His date of separation was 7 January 1946 at Fort Devens, Massachusetts.