While the military put up one hell of a fight, their ammo ran out in minutes allowing the Chinese bombers to walk all over them. When the Great War first started, American forces in Asia were taken by surprise by thousands of MRBMs and bombers hitting their bases. military, as they were the first to get hit.
However, do to the 2-hour engagement with China, not a lot was left of the U.S. On October 23rd, 2077, when the world was consumed in nuclear fire, the armies of the world almost ceased to exist.