1. Teeth

Tank Battalion Light Tank is:(D%):
01-20%: BT-5 M1933
21-40%: BT-7-2 M1937
41-60%: T-26B M33
61-80%: T-26S M1937
81-90%: T-26E
91-00%: T-60

Bttn HQ: 1x Light tank
2 Companies@

CHQ: 1x light tank
3 platoons@ 3x light tanks
1 Company:
CHQ: 1x T-34/76A
2 platoons@ 3x T-34/76A
1 Company:
CHQ: 1x KV-1A or KV-1B (in one Battalion only)
1 platoon: 3x KV-2 or KV-2A or KV-1A or KV-1B
1 platoon: 3x KV-1A or KV-1B

Motor Rifle Battalion

Bttn HQ: 2 rifle sqds, 2 trucks
3 Companies@
CHQ: 1 rifle sqd, 1 truck
3 platoons@ 3 rifle sqds, 2 LMG, 3 trucks
0-1 platoon: 2x MMG, 0-7 LMG teams, 3 trucks
0-1 platoon: 3x 50mm mortars, 1 truck
1 Support Company:
CHQ: 1 rifle sqd, 1 truck
1 platoon: 4x 45mm M37 A/T guns, 4 trucks
1 platoon: 3 SMG sqds, 9 PTRD41, 3 trucks
2 batteries@ 4x 82mm mortars, 4 trucks, Assigned FC

OR

Can replace Motor Rifle Battalion with an SMG Battalion, carried on tanks:

SMG Bttn HQ: 2 SMG sqds
3 SMG Companies@
CHQ: 1 SMG sqd
3 platoons@ 3 SMG sqds

OR

Can replace Motor Rifle Battalion with a Motorised SMG Battalion:

Bttn HQ: 2 SMG sqds, 2 trucks
3 Companies@
CHQ: 1 SMG sqd, 1 truck
4 platoons@ 3 SMG sqds, 3 trucks

2. Brigade Support

Tank Brigade HQ: 1x light tank, 1x T-34/76A with up to:
1 Armoured Car Company:
CHQ: 2x Ba-10 or Ba-20 or Ba-32
3 platoons@ 2-4x AFV as in CHQ

3. Notes

a) Radios are in Bttn HQs and above, possibly in tank CHQs.
b) Infantry have RPG-40 A/T grenades. The Motor Rifle Battalion PTRD41s, 50mm mortars and LMGs are normally issued out to the rifle platoons.
c) No APCR or HEAT rounds available.
d) T-60 not available until October 1941.
e) The Brigade has 1 Motor Rifle Battalion, one Tank Battalion with the KV company, and 2 (August) or 1 (Sept-Nov) other Tank Battalions without any KV tanks.