Shofner was appointed provost marshal of the 1st Marine Division in October and remained in this capacity until he was ordered as an observer to the 37th Infantry Division under Major General Robert S. Beightler for Battle of Luzon. He also held additional duty as advisor on guerrilla affairs to the command of Douglas MacArthur and finally returned to 1st Marine Division just in time for the Battle of Okinawa in May 1945.