Playing as Silvan Elves, I'm at round 320-ish. I have just managed to destroy Mordor and only need 7 more regions to win the campaign. HOWEVER, Harad took advantage of Mordor's initial ownage of pretty much everything and the other struggles to take power. Harad now covers all areas south of Mordor, the entire Gondor area and Ithilien.
I decided that a "what the hell, you only live once"-approach to the concept of a massive war that will cost hundreds of thousands of lives is okay. So now I'm facing off against the most numerable amount of soldiers I've could ever have imagined. Seriously, they have stack after stack after stack, most often with 2-4 units of Műmakils in each one. Though I have pretty good tactics against taking down the Műmakils quickly I'm having a hard time placing my troops the right way before battle, since a lot of them risk being stampeded by cavalry. I guess it's a force of habit to place them in 4-5 straight lines after killing Mordor orcs for a couple of weeks now, but I'd gladly accept any tips!
My armies are usually built like this:
6-8 units of spearmen/swordsmen
10 units of archers (including general unit(s))
2-5 units of siege weaponry (works very well against heavy things and the archer manages to clean up the rests).






















