Rattenkrieg is the third entry in the War Stories series. Featuring 20 scenarios chronicling in detail the legendary Battle of Stalingrad. Rattenkrieg introduces new urban warfare maps and rules for sewer movement, snipers, multi-story buildings, mouse holing, and street fighting. Additional German and Soviet units and assets are included as are the Romanians for the first time. Rattenkrieg not only expands the War Stories system to new theaters of combat but expands the assets and unit available to the Red Storm base game.