Should the military use video games to train the troops

I say yes and no, the games will definitely strain their hand-eye coordination, so long as they play the hardest difficulty, but they aren't getting any physical activity out of it. A grenade launcher in Call of Duty sends a lot less of a kick to the soldier than it would in real life, so as long as it isn't a daily thing, and they only play for an hour every time they do, I say it would be acceptable.