This whole discussion is silly. For more than a single reason. I'm not a sexist, I have believed in equal pay and equal rights all my life. I served 20 years in the USMC. Women were some of the best Marines that I ever lead. They (for the most part) were some of the best performers in their specific occupations, however, once we left garrison and entered the field things changed.
Female Marines are not suited for the rigors of combat. Yes, this is a generalization, but the vast majority of them cannot deal with the task just in training environments and training while intented to simulate actual combat never does. People don't actually get shot in training, they don't actually get blown up in training and the mental strain is never the same.
As much as some people like to disclaim, there are physical and emotional differences between the sexes. There are things that women can do and certain strains they can handle that men are not suited to do, the opposite is true also. Serving in direct combat skills is one of those things that women are not suited to do.