After World War II, Espaldon was sent to the Cooks and Bakers School of the Philippine Army at Camp Olivas where he graduated First Honor. On March 23, 1946, as he and his classmates were about to board a Douglas C-47 plane to return to Mindanao after graduation, he received orders that he would be retained as instructor at the school for having topped his class; hence, he remained at Camp Olivas. That day, the plane crashed on Mount Banahaw, killing most of the military passengers on board. At the time, it was the fifth worst aviation accident in Philippine history.