You know how many female Sailors come back from crusies pregnant? How many cases of sexual misconduct on the part of both male and female military personal go on each year?
You want to put them in line infantry units filled with some hardcore men?
Women don't even take the same PT test nor meet the same standards. Nor can they handle the stress of combat as well as men in the majority of cases. Men can not handle seeing women shot or blown to peices as well. It's just the way we are wired in that regard.
Your asking for a lot of trouble if you intermix combat units. The least of wich... SEPERATE HOUSING AND OBGYN VISITS IN INFANTRY UNITS
There, you have just doubbled the military houseing budget. Congradulations, enjoy your brief stay in office as SECDEF.
It's also common sense.