Koshiro Tanaka (田中光四郎; born 1940) is a Japanese martial artist and veteran of the Soviet–Afghan war. Tanaka left an office-job to confront his possible fear of death. He travelled to Peshawar then to the Democratic Republic of Afghanistan and after joining Jamiat-e Islami, took up arms against the Soviet and Afghan government armies.
Source: “Koshiro Tanaka”, English Wikipedia (CC BY-SA 4.0), excerpt