^Again, why bother? Why does WWII need to be brought in at all? The only reason is that it's what the original comics did and therefore the modern comics that pretend to be in the same continuity need to rationalize the time discrepancy. But for a new story in a separate continuity, there's no reason to associate the JSA with WWII. Especially given that we're talking about Smallville, a CW show aimed at young-adult viewers. For this show's target audience, WWII is ancient history. If the show's version of the JSA was associated with any war, it'll probably be Vietnam. But I don't see any need to tie them in to a particular wartime era at all.