All hyperbole aside, I think that young women of age, should register for selective service, just as the young men do.
It doesn’t mean that there ever will be an actual draft.
But if there is, I believe all should serve not just (essentially) half.
There are a plethora of roles in military service that are not direct combat. They aren’t going to force a 110lb woman into a “tip of the spear” role.
I believe many here on FR are failing to take into consideration the resulting change in young women's voting habits once they have some skin in the game of war, which is the continuation of politics by other means.
Uncle Sam will go from a Benevolent provider to a potential threat to a young women's life and freedom. Much more mature and responsible policy ideas will consequently rise in importance to young women when they step into the voting booth.
Voting will become the ultimate exercise in “choice” and what one does with ones body willingly or by the draft. It's a choice about your own life and not some hypothetical “fetus”.