How do I play the US 3RD Division campaign game from the community content? Do I need to have some other game downloaded? I would also like to play the Bridge to Far scenario (Market Garden). I have downloaded them but can't find them anywhere.

I just bought the three Soviet game and can't get them to run or even show up on my Order of Battle start map. Am I missing a step to make them work? I down loaded them and unzipped but still nothing. What do I need to do yet to play these? I have a few others that do work but for some reason these ...