I have made a free introductory version of my WWII small unit rules, A Sergeant’s War, available at the Wargame Vault. The introductory version of the game includes the basic rules for infantry combat and two starter scenarios. It is 25 pages long, 19 of which are the rules. The rest are introductory/designer notes, a table of contents, and the scenarios.
here is the link--description after the bump