What happens when you take a bunch of women, and a bunch of men, give them military training, weapons, and ammunition, and then make them live together for a year? Forget polite, things quickly get real. As part of a new initiative to gauge women in combat roles, the Marine Corps intends to field 460 Marines of mixed gender for a several month training stint, all while under the microscope of doctors and scientists from various disciplines. It’s not just a matter of anatomy and biology this time, Marine officials have told Marine Corps Times that they plan to chart…