Too Fat Lardies have just released a campaign supplement for their Chain of Command rules called At The Sharp End and so I had to pick up a copy to add to my collection.
At The Sharp End is 47 pages in the same style as the Chain of Command Rules but is only available as a standard PDF from the Lardies website.
After a brief introduction the book is split into four sections. The explains their approach to campaigns and then suggests three different types that you can use (No map, simple map, full map). The second section provides the rules for conducting the campaign itself. The third section provides rules for creating the characters involved and the final section provides guidance on how to build a campaign.
Everything seems pretty well laid out and, as with a lot of the Lardies stuff, it looks like it will be a good read whether you actually end up using it for an actual campaign.