At first glance, it might not seem as though gamers and members of the military have much in common. Probably not on second glance either. But they do have one thing in common - a hunger for challenge and achievements. In gamers this manifests as a compulsion to complete 100% of a game's content (even beyond just beating the game), but in the military it means gaining as many medals, qualifications, and ribbons as possible, along with increasing one's rank.