If you own Unity of Command buy this expansion. Doubles your game time, no compromise in quality and well worth the money...
This prequel DLC, whose events happen prior to "Stalingrad Campaign", completes the Eastern Front story as told by "Unity of Command". Take control of the Wehrmacht and its allies in Operation Barbarossa, from the dramatic early victories all the way to ignominious defeat at the gates of Moscow.
Campaign extends into what-if territory, pitting the Wehrmacht against extreme odds. Separate Soviet scenarios, about the two winter offensives which brought the Nazis to a halt. New early-war units, including Axis allies from Romania, Hungary, Italy, Finland and Slovakia