In stories told after the demise of his own comic book, Rock's character was revived, explained to have survived the war, and went on to perform covert missions for the United States government. He also battled his old foe, the Iron Major, and went on an adventure to Dinosaur Island with his old second in command, Bulldozer. According to John Wells:Kanigher had established Frank's post-war survival in "OAAW" #168, wherein he had Rock visit the Tomb of the Unknown Soldier, and Bob Haney picked up on that fact in "The Brave and the Bold". In issue #84, he'd had Rock and Easy cross paths with Bruce (Batman) Wayne during the war (in an episode obviously set on Earth-Two) and followed up with a present-day sequel in "Brave & the Bold" #96. In that one, Bruce arrived at the United States Embassy in South America and was introduced to "our Military Attache and Chief of Embassy Security ... Sergeant Rock, U.S. Army". Two subsequent present-day episodes found Rock tracking a Satanic figure that he believed was Adolf Hitler ("B&B" #108) and an Easy Company "ghost" that he'd been ordered to execute at the Battle of the Bulge ("B&B" #117). In the bizarre "Brave & the Bold" #124, Bob Haney and Jim Aparo actually guest-starred as Rock and Batman trailed a terrorist organization called the 1000. Following this, he appeared as a general and a Chief of Staff for Lex Luthor's administration. However, Frank Rock was involved with an incarnation of the Suicide Squad. At the end of the title, he peels off a mask and walks away from the team, while his companion "Bulldozer", assumed to be the original, stands up from his wheelchair, comments on how it was good to feel young again, and also walks away. Whether this was the real Frank Rock in disguise or an impostor is unknown; the series concludes with the line "Frank Rock died in 1945".