This is coming from a combat vet who spent four years in the Marine Corps infantry and IS NOT A SEXIST!!! Letting women into the infantry is an absolutely horrible idea. There are a number of physical, philosophical, and tactical reasons why it is a bad idea. Because of this, if women serve alongside men in combat, people will die unnecessarily. I get the feeling that this is less of a military decision and more of a liberal appeasement decision where everyone and everything must be equal despite the world not working like that.
Just because it's bad-a** don't mean it's a good idea.