Going back through this I am more and more leaning towards a NATO vs Warsaw Pact game (circa 1984-87) with the players making up a US Task Force against a large Soviet force. The main reason is that its the era I have the most firsthand knowledge and information with so it will be easier to document and set up.
Under this setup, players would be commanders of the various Company Teams (x4) and probably the Scout Platoon. Then there would be the Battalion (Task Force) Commander who has access to and control over the Battalion level units (mortars, engineers, etc) and all extra support forces that could be called on such as Division Artillery and Air assets.
Oh, and I will need at least 36 40x50 highly unique, pre-made custom maps.
