User blog comment:AnonymousTom/Caspian Border Map Coming to Open Beta?/@comment-4149032-20110930101245/@comment-28584497-20110930173058

There's numerous differences between Combat Mission and Rush. The main difference is that in CM, you're actually completing objectives that will advance you to the next portion of the mission (ie destroying roadblocks and ammo stocks), not just sabotaging generic satellite reciever boxes.