If these are the figures I'm thinking of, there are a few on eBay now from a seller called
raidovermoscow, including a WWII German machine gunner (item No.6015691183) and modern US and WWII Russian female soldiers. I can remember seeing an auction for a complete set (6 figures, I think) over a year ago. As far as I know, this was all they produced, and they are no longer in production. The designer, who also drew the box illustrations, was Akira Toriyama, the creator of the
Dragonball manga and anime series. That, I am afraid, is the sum total of my knowledge.