Billy Pilgrim through most of Slaughterhouse Five.
Doc Daneeka in Catch-22, especially later in the novel.
Private Leonard Lawrence aka "Gomer Pyle" both in Gustav Hasford's novel The Short-Timers and Stanley Kubrick's film Full Metal Jacket.
Seaman Larry Meadows in The Last Detail, aka the movie where Jack Nicholson slams a .45 pistol on the bar and screams "We ARE the Shore Patrol!" at an addled barkeep.
