Major Shofner was one of ten men including two Naval Officers, three Air Corps Officers, and two Marine Corps Officers who escaped after nearly a year in captivity after the fall of Bataan and Corregidor. The ten men evaded their captors for days until connecting with Filipino Guerillas under Wendell Fertig. The officers remained with the guerillas for weeks, obtaining vital information which they carried with them when they were subsequently evacuated by American submarines. Their escape was the only mass escape from a Japanese prison camp during the war. He retired in 1959 as a U.S. Marine Corps Brigadier General.