Hiroo Onoda (http://news.malaysia.msn.com/regional/japan-wwii-soldier-who-hid-in-jungle-until-1974-dies).
[Edit.--Speaking of which, "You may have to live on coconuts. If that's the case, live on coconuts!"]
[Edit 2.--This would have been much better as "He couldn't build a tank out of coconuts...," I suppose. Selah.]