From the back cover:

The campaign rules in Valor of the Guards are based on the tried and true system used in Red Barricades. Campaign games cover the heaviest fighting over a two week period in September 1942 including a 'mini' CG representing the struggle for the Stalingrad-1 Rail Station as well as a monster CG covering the drive to capture the crucial ferry landings. Many new RG types are introduced including Storm Groups, Stoesstruppes, Guards SMG Platoons and NKVD Militia Companies.