Georgia and Russia are using similarly configured T-72B/BM.
T-55/T-62 are thought to be from Sout Ossetia/Abkhazia.
Anything else you'll have to look at the uniforms for a clue - Geogia are using US Woodland/USMC Marpat. They usually wear their National Flag on the upper right arm.
However South Ossetians have also been seen wearing US Woodland.
I have not been doing this rec stuff for ages but was very excited to see all the kit last night. Not sure I would recognise a BMD and would confuse it with other stuff so for old times sake would anyone like to get the slides out and give me a quick UNCLASS lesson on the kit in this conflict?
I am sat in a darkened, mouldy, freezing cold portacabin.....