I can think of many reasons why there would be 200,000 in the army, assuming that that's the case to begin with. It's dangerous simply to be in the army, even if one doesn't go into combat. There's a limit to how many men can be trained, in order to basically create an army from scratch. Perhaps men are needed in the police and the national guard more than in the army? But first things first--where do your numbers come from?