Wikipedia
R.A.G.E.
Reaper Adventure Game Engine is a miniature wargaming core rule system by Reaper Miniatures.
As a master rule system, R.A.G.E. allows players to learn a few basic rules and then take this knowledge with them from game setting to game setting. One system for many games means that less time is spent learning and relearning rules and more time playing and painting. Games that use the system include Warlord and Combat Assault Vehicle.