I've watched a bunch of combat footage but I'm not a fan here. Not of the video, but of the action.
Yes he's an invader and UA has a right to defense and to kill invaders and defend their home and I fully support them. But this guy is obviously not combat effective. He's half dead already. His arm is fucked up and he's not gonna be shooting anyone. So killing him for the hell of it feels fucking cold.
Seems like bad strategy too. Let him live and it'll take 2-3 soldiers to evac him, and that's 2-3 soldiers not fighting that day.
Plus it's good PR to let enemy wounded get evac'd shows that you are the good guys.