I can't remember if this has been posted before but Nigel Askey has been publishing an extensive analysis of Operation Barbarossa.
Published
Volume I – The Project Concepts and General Structure, and Analyzing Weapon System Effectiveness.
Volume IIA – The German Forces, Mobilization and War Economy: June to December 1941 (Part I)
Volume IIB – The German Forces, Mobilization and War Economy: June to December 1941 (Part II)
Volume IIIA – The Soviet Forces, Mobilization and War Economy: June to December 1941 (Part I)
Volume IIIB – The Soviet Forces, Mobilization and War Economy: June to December 1941 (Part II)
To be Published
Volume IV – The Finnish, Rumanian, Hungarian, Slovakian and Italian Forces on the East Front in 1941
Volume V – Relative Overall Combat Proficiency (ROCP) of Soviet and Axis Forces during WWII
Volume VI – The Science of War Gaming and Operation Barbarossa
https://www.operationbarbarossa.net/