I would think that it is up to parents to ensure their children know the difference between a game and reality.
I'm not saying I like what the Army is doing, but as was mentioned it really isn't a new tactic. The America's Army game has been around for a long time, and having been in the military myself I would recommend that anyone considering joining do their homework and make sure they understand what it's really about before they sign the paperwork.
I largely knew what I was getting into when I joined, and I hope that no one relies on a video game to show them what the Army is like.
"You'll find that many of the truths we cling to depend greatly on our own point of view."