In Operation Barbarossa: The Struggle for Russia, you will take command in two German and one Soviet campaign as well as individual scenarios and determine the fate of the Eastern Front. Your armor, infantry, artillery and air units will follow you through the most crucial battles of the Eastern Front. You will be able to choose from 47 different upgrades and improvements for your units as well as add new forces based on your success in the campaign.

http://www.matrixgames.com/products/374/details/Operation.Barbarossa.-.The.Struggle.for.Russia