Drafted in 1937, he was sent to China in order to gain information for the Imperial Japanese Army, but went missing, eventually being declared dead in 1963.
He was found living in the Chinese province of Henan in 1993, suffering from amnesia, and returned to Japan that year.
In 1993, a Hyogo-based civilian group got information about a Japanese man living in Henan Province.
His family said Ishida had been suffering from amnesia after receiving a bullet wound to the head during the war.
[1] This biographical article related to the military of Japan is a stub.