In your end-goal communist society, how is the law enforcement and military done?

I wrote "your end-goal communist society", because to be honest there are probably multiple possibilities for what people think of as the end-goal. So just go with "yours" and don't worry about any "true one". If yours happens to align with something many consider a canonical one, then that's also fine, though, go with that.

Secondly, If you're going to claim that no law enforcement or military is needed, I think deep down that's something you yourself don't really believe. So, with caveats out of the way:

How are laws enforced? Are laws uniform throughout the society? Who enforces them? How are they trained and equipped? How are they organized?

Same for the military.