A decent episode. As someone who's gone through boot camp at Parris Island, there's some glary inaccuracies. First off, recruits are called recruits. NOT privates. That's an Army thing. Another Army thing they picked up on is the name badge on the USMC major. Army wears name badges like that, not Marines.
Another is the supposed time when they go to bed. They don't go to bed at 1800. It was always 2100 and woke up at 0400. And the fire watch would of NEVER gone out for a smoke! Also, I find it hilarious that somehow the Marine Corps lets in a killer into boot camp despite the amount of paper work and going through MEPS etc that goes on, when joining the military. NO WAY IN HELL would the military let a person who wasn't fully vetted on the island. So the premise of a killer just signing up to the military to escape the police is ridiculous on it's face. Also, the military police in the would be all over anyone trying to escape, "work out", whatever in the middle of the night on base.
As for the acting, it was all good. Meg was a convincing recruit and Harm did his lawyer thing. But the twist at the end was a bit of a surprise but as I said, not likely. But the ending with the platoon saluting Meg kinda got me. Not sure if I put spoilers in here or not.