Men have a choice if they go into combat arms or not if the choose to go into the military. How in the world would they not have that choice? It is very simple, if you don't want to go to combat, don't join the military. Or if you do join the military and still don't want to go to combat, chose a job that keeps you away from the front lines. No one is forced to join the US Military anymore (not since shortly after I was born (I will be 42 in a few weeks). Your slippery slope argument holds no basis.