Not a simple question to answer, especially for the Russians. The number of tanks in their formations varies between various tanks types; for example a Tank Platoon could be 4, 3, or 2 tanks for light, medium, and heavy tanks respectively. T-70s would be your Light Tanks, and KV-1s are treated as heavies. Most of the rest, Lend-Lease included, are treated as mediums. At this point in the war Russia no longer fielded full Tank Battalions, but they were included in ‘Mixed’ Battalions.
A Russian Tank Corps consists of:
- Corps HQ
- Three Tank Brigades
Each Tank Brigade consists of:
- Three Tank Battalions
- One Mechanized Infantry Battalions
- Anti-Aircraft Battalion (3 37mm AA Guns)
- One Field Battalion (3 batteries of 4 76mm guns)
- Mortar Battery (including 12 82mm Mortars)
- Reconnaissance Company (3 infantry and 1 armoured car platoon)
- Reconnaissance Battlalion (20 armoured cards)
- Rocket Launcher Battalion (8 Katyushas)
A Medium Tank Battalion consists of:
- Battalion HQ (1 Tank)
- Three Medium Tank Companies.
A Medium Tank Company consists of:
- Company HQ (1 Tank)
- Three Medium Tank Platoons of 3 Tanks each.
A Heavy Tank Battalion consists of:
- Battalion HQ (1 Tank)
- 4 Heavy Tank Companies.
A Heavy Tank Company consists of:
- 1 Company HQ
- 2 Tank Platoons of 2 Tanks each.
A Mixed Tank Battalion consists of:
- Light Tank Company
- Medium Tank Company (See above)
- Heavy Tank Company (See above)
A Light Tank Company consists of:
- 2 Platoon HQs of 1 Tank each.
- 2 Tank Platoons, of 4 Tanks each.