Based on the famed W.W.II cartoons: Lowbrow G.I.s Willie and Joe, on the Italian front, are good soldiers in combat, but meet the antics of gung-ho Captain Johnson and other military snafus with a barrage of wry comments. On a 3-day pass in Naples, Joe's penchant for wine and women involves the pair with luscious Emi Rosso and her moonshiner father, whose tangled affairs land them in ever deeper trouble.