I have been running an only war group for a few months. The game was based around a Penal legion. The group contained one commissar, medic, and three grunts. The game plays pretty well. The group seemed to like the scenarios. But everybody's schedule kept changing, so we had to break for a little over a month. I'm hoping to kick off with the group again soon. They were about to blow up a fuel depot. If it falls through I was going to join a dark heresy group.