The repeal of DADT does not affect the UCMJ. In fact, a a recruit can be outted in boot camp when a SSgt asks whether they are queer or not. With DADT, the SSgt cannot ask them. Now, when they answer, they cannot lie. That is a UCMJ offense.
Meanwhile infantry units know how to deal with queers in their ranks. Marines can take care of insurgents, IEDs and officers. They can sure as hell deal with a few perverts.
Except the perverts are now protected and have instant access to the willing perverted press.