The Lurker said:
world war two hasn't happened yet in that timeline-- FMA is set parallel to the 1920s.
The Manga and anime versions of the FMA story differ in some pretty big ways as far as characters and overall history and how much of alchemy in their world is powered by our-world bloodshed, and there's a few allusions to people having gone back and forth between worlds before.
One of the reasons I LOVE FMA is because it doesn't have as much of the distintly japanese cultural baggage, it seems fresher.
I was referring to WWII trigerring a "Rifts" event.
But anyway, I'd be willing to say that a US Army armored division could probably wipe the floor with any fighting force, spellcasters or not, it encountered in FMA's world...hell, in most fantasy worlds! If one could somehow get across, and a stable portal was opened, and the logistics were taken care of and they had air support...jeez! Dead knights and dragons for kilometers around...or whatever it happens to be...
I had a bizarre dream along those lines. US recovers alien relic, opens portal to parallel world where magic works, President Bush goes on TV and announces the US is invading, and before you know it, the parallel earth is under US occupation...of course, it's harder than it looks, since they can improvise IEDs fairly well in those parts for some reason...
'Nother story, though.