Why were they sending middle age people in the future to fight a war?
They also seemed out of shape, had no army training, no clear leader, vague instructions, they were simply teleported in the future just to be killed fast by the aliens, what were they supposed to do there...?
I expected some sort of twist at the end, like maybe they were trying to get rid of excess population, because the future was overcrowded or something like that, but it never happened...