This is a Decisive Campaigns title that is free if you have purchased and installed DC:Barbarossa or DC:Case Blue or DC:Warsaw To Paris.
It is no longer being actively developed. VR Designs attention is now on the DC4: Ardennes editors (which have grown out of the DC:Community Project).
Please go to the Community Pages of this website for more information: Get started with the DC:Community Project.
For scenario designers there’s is the Community Project Wiki to learn how to make your own scenarios.
For players check out the (rather old and no longer updated) Featured Scenarios page.