So OPFORS is now available for download! You could play fun skirmish battles from the 20th and early 21st century with these rules...and it includes VEHICLE RULES!
I paid NO attention to things like worrying about a German 88 guns vs. a Sherman's rear armor in a down slope firing position during a rain storm in November of 1944. Nope, it is strictly meant to get out your models and start playing! Lots of detailed rule sets are out there already, but in 6 pages of rules you now have the chance to throw some tanks, dog faces, terrorists, or special forces onto the table top and have some fun in under an hour!