As promised (story), Battlefront.com has released for free Theatre of War - Battle for Moscow, an add-on which also acts as a patch for the original game, Theatre of War. This add-on/patch features a whole new 10 mission campaign (Battle for Moscow, 1941), various gameplay changes and fixes, as well as a powerful Map Editor. Press 'read more' for details.
Update: if you have the DVD version of Theatre of War and the game stops launching after you apply this add-on/patch, you simply need to go into your Theatre of War game folder and rename the file tow2.dll to be called elicen40.dll

Theatre of War - Battle for Moscow Add-on/Patch (234.36MB)