After his initial training at the Naval Training Station, Bainbridge, Maryland, (where he advanced to seaman second class), he stayed on to attend the Hospital Corps School, where he was again advanced, to pharmacist’s mate third class. He studied at several training centers over the next two years and was advanced to pharmacist’s mate second class on 1 August 1944.



 After combat training at Camp Pendleton, California, PhM2c Halyburton embarked aboard the transport USS General M. M. Patrick on 14 December 1944 to join the 2d Battalion, 5th Marines, 1st Marine Division, which was leaving for duty on the island of Okinawa.