re: I didn't see THIS until after I had posted back to you, above.
I think the problem is a Marine with a less-than-sophisticated vocabulary.
If you talk to anyone who has been in combat, there is a lot of good feeling about coming out of a battle with the bad guys toes up and not your people. If the guy you are shooting at is someone who makes a career of torturing others, blowing up civilians, and chopping heads off, I can see where there would be a lot more good feeling than one might have in shooting, say, a poor conscript hauled into the enemy's army. In the context of the full quote, where he describes the kind of people he's talking about, it's clear enough.