At the age of 20, after a short period with the Tajima Yoko trading company in Wuhan, he enlisted in the Imperial Japanese Army. He attended the Nakano School in Tokyo, the key training camp for Intelligence agents, where he was trained in propaganda, sabotage, martial arts (including aikido) and guerrilla warfare.
Click on the link below for the full article:
http://www.thedailybeast.com/article...surrender.html