The use of the Rock character in post-war stories had one major effect on Rock's backstory, according to Wells:All of the super-hero crossovers were more than Kanigher could take. In the letter columns of 1978's "Sgt. Rock" #316 and 323 and 1980's "Sgt. Rock" #347 and 348, he announced that his hero had not lived past 1945, blunting most of Haney's "Brave and the Bold" episodes if nothing else. "It is inevitable and wholly in character that neither Rock nor Easy survived the closing days of the war", he proclaimed. Indeed, in the letter column for "Sgt. Rock" #374, Kanigher stated that:As far as I'm concerned ROCK is the only authentic World War II Soldier. For obvious reasons. He and Easy Company live only, and will eventually die, to the last man, in World War II.