Wonder how long before they go into a future conflict. I can't imagine them doing a WW1 game, since the only objectives would be is to run over to that trench, kill a few guys, then retreat back to yours, repeat.
And earlier games would suck with reload times. Darkest of Days did that in the demo I played, it takes nearly 30 seconds to reload a shot, and that's if you screw up the quick reload part (ala Gears of War). To be fair, then the game just says "fudge it" and gives you a high powered automatic future rifle to mow down Confederates with shortly afterwards