Here are some great net resources on the Russian Campaign. 

• ARNAUD BOUIS WAR IN RUSSIA WEB SITE - The man who programmed it all.

• OPERATION BARBAROSSA  - A nice complete history of the Russian Campaign

• THE AFV ASSOCIATION

•  PANZER LEHR - WWII Panzer's Page

•  TRACKS and ARMOUR - All WWII Armored formations and unit profiles listed

•  ACHTUNG PANZER! - WW2 German AFV's

•  KURSK 1943 - Overview of Operation ZITADELLE

•  DAS REICH - Unit History of the 2nd SS Panzer Division

•  RED STEEL - Soviet AFV's

•  PANZER GRENADIER - Panzer Grenadier formations in WW II

•  BLACK CROSS / RED STAR - Eastern Front Air Combat

•  RUSSIAN MILITARY ZONE - WWII Russian Military History

•  ORTELLI'S MILITARY ART - WWII Portraits

•  TROOPER - Hundreds of military links

•  EAGLE19 - German Paratroopers History Page

•  STALINGRAD - Excellent page of this most important battle