Superman #66

It's the final battle for the fate of mankind. The heroes of Earth press the attack to confront Warworld once and for all, but Brainiac's final solution may prove the deadliest attack of all.

Characters: Agent Liberty, Aquaman, Batman, Big Barda, Blue Beetle (Kord), Booster Gold, Brainiac, Captain Marvel (DC), Crimson Fox, Deathstroke, Dick Grayson, Dubbilex, Elongated Man, Emil Hamilton, Fire, Gangbuster, Gold, Guardian (DC Comics), Guy Gardner, Ice, Infinity-Man, Iron, Jimmy Olsen, Kilowog, Lead, Lex Luthor, Lightray, Maxima, Mercury, Metamorpho, Metron, Mister Miracle, Mon-El, Orion, Platinum, Rocket Red (Pushkin), Superman, Thorn (Forrest), Tin, Wally West, William Payton, Wonder Woman