At my local club I've been running a 3 round min-campaign using the Dragon Rampant rules called, 'Escape To The South'. If idea interest you download the blank campaign document here.
There is also an accompanying Extra Magic Items document as well, which come into play in Round 3.
The HWC House rule document referenced in the campaign doc is available from a link in this posting. Link
In our campaign which has 14 players in it, we are coming to the end of round 2. The forces of 'The Black Horde' have had some success and currently leading the forces of The Greater Empire Coalition' 111 glory points to 66.
If you have any questions I'll be happy to answer them.