Movies like "Saving Private Ryan" and "Apocalypse Now" prove that war really is hell.'Gallipoli', 'Saving Private Ryan', and 'Braveheart'Credit: Paramount/Courtesy Everett; David James/Dreamworks; Andrew Cooper/ParamountThe very first stories (so I surmise, as I was not actually there) were told by Early Man secure in a cave or around a fire, sharing what happened to their unfortunate comrade who just got turned into mastodon brunch. “Uch, you s…