Commissar Squads can act as it's own unit, or be broken up to embedded into to other infantry units (like Heroes) to add more versatility to your army!
Looks like FFG has announced more units for release in late second quarter 2012. Looking forward to these additions and hoping that the Allies won't be left in the Dust (no pun intended) as the SSU takes over as the "speedy faction" and the Axis gain more devastating long range and heavily armored units (because, you know, the Axis needed more units with unlimited range and heavy armor...)
Commissar Squads, more Helicopters, more KV-47's (with artillery options), and 3 new German Walkers. Check it out here.