Can you expand that acronym?
Steel Panthers: World at War.
Historical accuracy, mechanicized version of the slavishly accurate game rules people used to build tabletop around so it plays fairly quick, hexbased turn-based, and an utterly ludicrous number of scenarios historical and not-quite-historical plus the battlemaker so you can build your own. It's even free, but you'll have to buy it if you want the random campaign generator too.
The engine is getting old though, and weird bugs pop up. I, for example, can't use the artillery/airstrike interface whenever I forget how much of a problem that is for somebody who played SP3 and reinstall.