the fact that you think there isn't shows how little you know of such things. even in ww2 we were ready to invade japan 2 years early and suffer millions of casualties because they thought it would "bad for national morale" to prolong the war to 47/48. but i guess when war is just a video game to you and such concepts fly over your head, yes there is no time limit! send in the next wave, decrease death benefits and begin the rationing! just one more wave and victory will be ours!
United States