Fuller survived the fall of Bataan and Corregidor but was captured May 6, 1942 by the Japanese at Ft. Hughes, a small island off Corregidor. Because his captors needed a radioman to maintain their equipment, he was held on the small island until January 12, then was moved to Corregidor. He and the three other Americans later escaped. Reaching Luzon by a makeshift raft, which had been secretly assembled, the men trudged for 18 days through the dense Philippine jungles before coming upon a friendly Filipino camp. There, Fuller organized the so-called Liberators of the Field guerrilla force, harassing the Japanese and relaying vital information to Filipino and American commands and setting up a system of rescuing downed airmen. During his six months of guerrilla activity, Fuller was listed as “missing in action.”