Vraciu's first air-to air combat took place over Wake Island in October 1943, flying from the light aircraft carrier . Vraciu scored his first victory on October 5, 1943, when he and O'Hare encountered an enemy formation. O'Hare flew below the clouds to find a Japanese Mitsubishi Zero and Vraciu lost sight of him. Vraciu followed a second Zero to Wake Island, where it landed, and strafed the Zero on the ground. Vraciu also destroyed his first Mitsubishi G4M ("Betty") bomber while it was parked on the runway. During a mission in the Gilbert Islands (Makin and Tarawa atolls) on November 20, 1943, Vraciu downed a Betty bomber. (During his earlier training with O'Hare, Vraciu had learned to use the high side pass maneuver when attacking a Betty to avoid the lethal 20mm cannon wielded by its tail gunner.)