From: San Diego, Ca.
My experience with DCCB so far;
1. Short ealry Kharkov as Russians, won.
2. 1st Panzer Army linked Campaign, won first got completely overwhelmed on second. Quit.
3. Case Blue long campaign as German vs. Normal AI given as much time as it wants:
Initially, I have been just hammering away and picking off select locales which allowed for encirclement bonus and keeping an eye out for potential pocketing. This went on and on until I began to take some hexes, not many, but a few each turn. I then began to pocket small groups of Russians and bypass them. I use engineers, flak, anti tank brigades to mop up these isolated groups after they've sat and starved for a few turns.
It's tough going, no breakthroughs to mention. I am only about 1/2 way to my major objectives, with more being added and my prestige dropping. I have one promising move towards Voronesh but the AI of course is completely unlimited in reserves and transport capacity. I'm sure I'm doing something wrong. I haven't used my PP's yet.
Around Rostov I am on the brink of collapse, I had to rail in a security division to bridge a gap in the lines. I'm on the outskirts of the city, but the Russians have reenforced with thousands of troops. It's looking very hopeless overall.
Dismissal emminent, I have to take one major objective before the end of July, otherwise I'm kaput.
Along the way, I've learned a few things about playing the game that I will try next time around. But I'd say, it's not easy to win as Germans.
History began July 4th, 1776. Anything before that was a mistake.