What are the most popular Soviet commanders vs each faction?
I prefer
Guard motor coordination tactics - guard are good long range infantry , also acts like AT force multiplier and light AT support
mortar is really good at breaking fortifiacations
t34/85 is great tank - better than p4 while costing only a bit more
mark target allows your t34/85 to hurt other tanks more
and reapir is good when you have big t34/85 pack and you lack engineers
Shock frontline tactics
Shock troops are great ambush troops and close range killers , also have grenades to counter hmgs
incendiary barrage is good to force pak walls to move
kv 8 is great mid game anti infantry tank , just keep in mind you need to support it with su76 or zis
and last is2 is great late game tank that allow you to save some fuel because you can stall with tier 3 units and then outcome enemy with is2
armored assault tactics
combines tanks from both previos doctrines but lack elite infantry
Also have good airstrike and
Maphack - at 0cp you have ability that allows you to see what units enemy build and what is he teching so you can have counter even before he show his units
advanced warfare
t34/85 + conscript repairs (so tanks can fight more cause they are faster repaired) + radio interception (maphack from armored assault) make this commader really good
And still I have not talked about conscript ppsh that allow them to scale lategame (at cost of lacking elite infantry in this commader) and about single starfe that is rather overpriced
Lend lease commader
Dushka is great hmg , better than maxim , can also kill light vehicles
conscript repair kit allows your tank to be more on field cause they are repaired faster
munny to fuel transfer is good if you want to play armor heavy strategy
assault group is however overpriced and not worth itself
And last this is sherman.
It is a bit weaker t34/85 that DOES NOT NEED TECHING so you can sit on tier 3 field more tier 3 units and still have a lot of medium armor because you dont pay so much for teching to tier 4 (and still t 34/76 is much weaker than sherman [t34/76 < sherman <t34/85])