Dragon, Tamiya, and ICM make Russian figure sets in plastic that would probably work. There are a bunch of Russian soldiers/figure sets in resin as well.
Here is a start, just scroll through the pages to see more.
Gino P. Quintiliani - Field Artillery - The KING of BATTLE!!!
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"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf." -- George Orwell