Memoir 44: Eastern Front - Rules of Play says:
From the frozen shores of Lake Ladoga to the burning ruins of Stalingrad, relive some of the most intense battles of WWII, where entire Army groups disappeared faster than a single battalion on the beaches of Normandy.
This expansion follows Expansion one, the Terrain Pack. While the Terrain Pack focused on new terrain and rules, the Eastern Front expansion is devoted to the ferocious battles that pit the Axis and Soviet forces against each other.