All morning long we've seen how, right after Pearl Harbor, the members of the JSA enlisted in the military in their civilian identities (except for Spectre, because "ghosts can't enlist.").
And we've also seen that, in every case, they didn't stay in their civilian identities for long, because war is indeed hell, and super-heroes can't resist super-heroing when they're needed.
And so the members of the JSA have sunk ships, shot down planes, taken out tank battalions, captured entire islands, caught saboteurs, rescued troops...it's been a busy morning.
But, despite all those victories, it turns out that all of that super-hero participation in war is a BAD THING!!
So the "top" commanding officer of the Army has Johnny Thunder summon all of the Justice Society memebers:
THE JUSTICE BATTALION OF AMERICA!!!
And you thought Roy Thomas was just making that shit up...
Of course, they agree...why maximize your resources by spreading them out, when you can lump them together (and let 7 other divisions go without), just because some of your commanders got into a brawl over who was the best super-hero?
Still, one good thing happens:
From All-Star Comics #11 (1942)