I've got this idea for mass combat, and I thought I'd present it herefor the scrutiny and input of all!
Use the detailed Mass Combat rules from the core rule book. Before setting up the conflict, the GM sets the scene and breaks it down to objectives, just like for an endeavour.
By defeating enemy units and by securing strategic positions and other advantages, the PC:s gain Victory Points. Each objective has a set number of VP:s just like with endeavours.
E.G. The PC:s are squaring off with the vile Ork raiding force of Gryshmak Khaar
Objective A: Pre-Battle Skirmrish 5VP
A few ork boar boys as well as a some advance units harry the front lines(1VP each), there is a hill that may be captured (1 VP) as well as a radio tower (2 VP)
Objective B: Main Battle 10VP
The orks are looking for a fight, so the two forces clash. 1 VP per defeated unit, 5 VP if Boss Gryshmak is defeated. There's a baggage train that may be raided (2VP) and a weird boy units that's worth 2 VP.
Objective C: The rout 2VP
Keep 'em running - if some units keep pursuing the fleeing orks, that's 1VP, every ork unit destroyed is 1 VP
At the end of the day, with 17 VP they've won the confrontation (if they get 15 VP in A and B but none in C then the orks regroup and retaliate). VP:s most probably get the PC:S achievement points, for the link with the endeavour system.
This system can be scaled from where you go through each single unit in a skirmrish, to massive battles where the PC:s control a company each and the rest is backdrop
So, what do you think? Does it make sense? Does it make it easier to add strategy and tactics to mass combat?