I was considering about writing a rules for a combats between armies (small armies that is).
An idea that I had was that gathering an army would require an "army sheet" similar to party sheet (with different kinds of armies having different abilities). The army sheet would have sockets for "units" (or not, but the units would still be represented by small cards giving different bonuses) and a Stability meter. The fights would be simple rolls between the leaders of the armies - almost like "army attack"-actions (type: Support). Success would decrease the Stability (kinda like wounds) of the army and if reduced to zero the army would be broken.
The progress of the battle could also be counted with a tracker where events spaces would mean that the characters face an important enemy or an event they must get through.
How would this sound to you? Any additional ideas? I think it needs to be kept simple.