The basic OPFOR used in Gators!, Airborne!, and Rangers! is based on American equipment from the 1950's and 60's. These new additions to the OPFOR are based on 1980's-vintage weapons from the Soviet Union, and they pack a lot more of a wallop. Most of these vehicles were exported to other nations, so your scenarios can still be based on brushfire wars anywhere in the world. I haven't written any scenarios, but this document includes a few general suggestions. This new OPFOR provides vehicles and aircraft to replace their equivalent units in the basic OPFOR. You will still need that OPFOR to provide soldiers, light vehicles, and counters. The new units follow the standard rules for the game without modification.