The Revised and Expanded edition of the 2006 book Ostfront.
A Flames of War sourcebook for mid-war conflicts on the Eastern Front. Includes a brief historical overview of the Eastern Front ca. 1942-1943, but is primarily composed of listings of organization/composition, special rules and point values for units within the German, Finnish, Hungarian, Italian, Romanian and Soviet forces participating in this theater.
Per design notes from the Flames of War website:
'Following from North Africa, Eastern Front is a major revamp of Ostfront, one of our mid-war compendia. Like North Africa it brings our old books up to our latest standards with the new company organisation diagrams, complete listings rather than modifications for variants, and better overall organisation. It has also undergone a comprehensive re-pointing to bring all of the forces into line and incorporate the last four years of experience.'