The various Filipino guerrilla groups operating in the vicinity of Los Baños played a key role that led to the successful liberation of the camp. Earlier, in the partisan war against the Japanese, a combined guerrilla command was formed to bring some order to the effort by the defunct USAFFE command, which was in charge of unconventional forces in the Philippines, and renamed as the General Guerrilla Command (GGC) of Luzon under Maj. Jay D. Vanderpool of the U.S. Army whom the 11th Airborne soldiers affectionately called, "The Little Corporal".