[FreeReign]

It’s basic 10th Amendment. “The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.”

[Bruce Campbells Chin]

The federal government is specifically charged by the Constitution with setting rules for the governance of the US military. The state can't tell the military it can't perform abortions anyore than it could tell the military to disarm.

To change that military policy, you'd have to change federal law.