Coursey and his squadron provided air transport of personnel, equipment, and supplies, including aeromedical evacuation during the combats in Northern Solomons campaign, mostly on Bougainville Island. He remained in command of the squadron until the end of war and served as U.S representative during the surrender of Japanese lieutenant general, Masatane Kanda, Commander of the 17th Army operating on Bougainville on September 8, 1945. For his service with VMR-152, Coursey was decorated with Bronze Star Medal with Combat "V" and also received Air Medal for participating in aerial combat flight.