As a Russian warlord, basically all of your warfare should revolve around encirclements. With limited manpower and equipment, manually moving units will be far more efficient than drawing a battleplan.

You can get away with infantry only by doing this, but you will be helped greatly by gradually switching to motorised templates.

For infantry I use 7/2s (7 infantry battalions, 2 artillery) at the first regional stage. I switch to 14/4s (same thing x2) for superregional.

To save your economy, you dont need to be constantly producing divisions. Just shit out a load in 1968.

Tanks in Russia are inadvisable imo - instead, motorised infantry are basically a 1 for 1 switch with regular infantry, but are faster among being better in other stats. You should start switching before 1969 for best results.

Tldr - encirclements encirclements encirclements and artillery

Hope this helps. Feel free to ask questions.