But, how did that date go in a fictional world where Superman was active since June, 1938, Batman since May, 1939, and there was a teams of heroes like the Justice Society of America and the Seven Soldiers of Victory?
So It Begins
That question was answered starting with Justice League of America #193 (August, 1981) in a special preview comic, by Roy Thomas, Rich Buckler, Dick Giordano and Jerry Ordway, as readers saw Flash, Green Lantern and Wonder Woman race and be captured by Solomon Grundy; Sandman, Johnny Thunder and Starman be taken down by the Sky Pirate; Dr. Fate and the Spectre be defeated by Fate's foe, Wotan; Superman, Batman and Robin be defeated by the Alchemist, Professor Zodiak) while opening a USO function; but, Hawkman, Atom and Dr. Mid-Nite were able to defeat their foe, the attacking Monster (all while being watched by a man in a trenchcoat). If there was trouble on this day (December 7th, 1941), who could FDR call? (The answer would be, "The All-Star Squadron", but they didn't exist yet.).
The Team Forms
Heroes Johnny Quick and Liberty Belle (who are reporters in their alter egos, and were both present during events chronicled in the Justice League issue as Johnny Chambers and Libby Lawrence) meet outside the White House as Hawkman and FDR decide to gather all heroes to find out what's going on....and the villain of the piece, time traveler Per Degaton. is revealed to the reader while he attacks the Shining Knight (of the Seven Soldiers of Victory) with his villainous minions.
...continuing the story, and adding Hawkman's girlfriend, Hawkgirl, into the mix as well....
Continuing the Fight
Freedom Fighters under Uncle Sam), as well as adding to the history of Earth-2, and the Justice Society of America (including future members Hawkman's partner Hawkgirl, Sandman's partner Sandy, Wildcat, Mr. Terrific and Robin), the Seven Soldiers of Victory, and even other Golden Age characters like Johnny Quick, Liberty Belle, Robotman and Plastic Man...
TNT and Dan the Dyna-Mite, Air Wave, Manhunter, Zatara, Sargon, Mr. America, Midnight, the Whip, Dr. Occult, and even World War II heroes created later, like Steel (renamed Commander Steel after the assistance of the All-Star Squadron in freeing him from Baron Blitzkreig), as well as new heroes like Firebrand and Amazing Man, and facing off against the Marvel Family and the Monster Society Of Evil...