Thanks for input guys.
Well, although the size of the forces is almost 1:1, the REDs are rather poorly equipped. Their IFVs are ATGMless to simulate the fact that they scavenged or captured what they could. I also artificially lowered the RPG ammo qty for most of the units, to simulate the proper rebel army.
The key is to keep distance with your heavy equipment and use combination of artillery (which is rather abundant, including the BM-30 Smerch and also SU-25 CAS) and fire support from tanks/IFVs.
It's a challenge, indeed :-)
I have some plans for minor cosmetic changes though.
http://en.wikipedia.org/wiki/Second_...onetsk_Airport
The real battle still rages on aswell.