If you mean rules where i command a division, LWRS (or the reformatted version bewegungskrieg) is what i most commonly use, followed by Panzer Korps. Both are complete and fully tested and work very well.
IN beta land i also use Bob Mackenzies BBWW2B rules and have had a few games. Its a beta set of rules so to setup a game takes some effort.
Finally, i `have created a quick play version of korps Commander and have a version which allows you to command a division, called "Divisional Commander", or more accurately Divisions-Kommandeur. Its a bit more complex than LWRS and lacks supporting material – so a lot of effort is required to play a game, unless its set in 1939.
My strong advice is to initially try LWRS (or Bewegungskrieg – they are both identical, but Bewegungskrieg has a lot more supporting material). Both are free. If you like the scale you could try Panzer Korps.
I have create a video, both on utube and bitchute"link which list all the rules which allow you to command a division.