Zf202. The Japanese Amphibious Assault Plan to attack Corregidor, Fort Mills, on “D-Day+1” the 6th of May 1942. The Japanese called it “X-Day+1”. As history tells us, this assault was not necessary because General Wainwright surrendered Corregidor on this day. This picture came from Japanese archives found by the authors’ team of the book: Relentless Hope: A True Story of War and Survival, by David L. Britt