Here in the USA, we have a law that all males under a certain age have to be registered for the draft. From what I understand, they're legally supposed to update their contact information anytime they move until they're 25.
Women are not ever required to register. I don't think we legally CAN even if we did want to.
I just thought about it earlier and decided to check and see if being trans would exempt you. It doesn't. đ
https://www.sss.gov/register/who-needs-to-register/#p7
The US government doesn't want to give up potential male soldiers, even if they wear a dress. Just like on MASH!