Pfc. Robert Ainsworth was drafted into the U.S. Army and assigned to Hq Company, 192nd Tank Battalion at Fort Knox, Kentucky, during his basic training. He was sent to the Philippine Islands where he fought in some of the first tank battles of WWII involving American tanks. When Bataan surrendered to the Japanese, he became a Prisoner of War. He took part in the death march from Mariveles to San Fernando. He was held at Camp O'Donnell and Cabanatuan POW Camps. On October 10, 1944, he was boarded onto the Arisan Maru. A Japanese "Hell Ship". The POWs were held in the holds for eleven days until the ship sailed for Formosa. On October 24, 1944, in the late afternoon, the ship was hit by two torpedos from an American submarine. The Japanese refused to rescue the POWs as the ship sank. Of the 1803 POWs on the ship, only nine survived the sinking.