Epic and Warmaster both worked well for their scale.
For Warmaster, every fight was essentially a game of Warhammer, but of course abstracted.
Epic - proper old Epic (it's not often I'm an edition snob, but this one is a stickler for me!) was generally won through careful contestation of the Objectives, coupled with the choice elimination of enemy units. So akin to modern 40k, but arguably harder thanks to the orders system. You really, really needed to think about what you wanted to do, as it was IGO/UGO, with different phases to be worked in.