I just read an article about the Cholm ASL scenario pack and that got me thinking about whether there is a 'cauldron' campaign for CMBN?
It would have to play out on the same map (a big one), several battles with the same German forces trapped inside.
I don't know if it is possible to do with the current campaign system in CMBN. I have no idea how it works, but maybe a talented scenario designer could creatively use the branch system that I have seen Fieldmarchal Blucher is using in his excellent Descent and Hoffnung campaigns, like if you own this victory location, the next battle will have the following victory locations and x forces and then copy paste those into a long series of branching scenarios that are essentially the same but with steadily diminishing German forces...
Does this make sense to anyone? :-)