Marvel Comics: The Punisher Invades The 'Nam Vol.1 #68 (1992)
 
Years before he brought his personal war to the mean streets of the Marvel Universe, Marine Sgt. Frank Castle fought in Vietnam - and the man he would become took shape in those killing fields. Revisit the horrors of the 'Nam along with Frank as he battles side-by-side with comrade-in-arms Mike "Ice" Phillips and faces down a deadly jungle sniper, and fights alone in his final tour of duty to rescue a crew of downed airmen from a sadistic vivisectionist. Plus: Years later, "Ice" comes to the aid of his fellow veteran - but can the two of them take down the paramilitary group the Sons of Liberty and a Central American drug kingpin?