In my next session I'm planning on running a mass battle involving (mostly) Crab v. (mostly) shadowlands. So those are the factions that I'm most concerned about right now, but if people want to throw in other armies/cohorts it may be nice to have a list available for use as a GM resource.
I have 5 PC's, so I need 5 cohorts per side. On the "Crab" side is going to be a Kuni cohort, A Hida cohort, a crab ashigaru cohort, a Shinjo cohort, and a Daidoji cohort. I plan on using the "Samurai elite army" to represent the crab force, but I'd like to differentiate the Hida, Daidoji, and Ashigaru infantry somewhat. I also don't feel that the normal rules for "mystics" really applies to Kuni that will.. especially as the Kuni would probably be more focused on killing shadowlands in this instance. Finally, I feel like Shinjo cavalry should have some slight advantage over normal cavalry. I'd also kinda like to see ideas for a moto cohort, possibly using moto white guard and/or wardogs.
So with 5 (or six) cohorts on the heroes side, there should also be 5 or 6 shadowlands cohorts. I've already established that the shadowlands forces consist of well-trained goblins and slightly rebellious (but more intelligent) Ogres. This shadowlands force also has the assistance of a bloodspeaker cult and a band of ronin. I'm considering throwing in a band of dark moto and/or some minor oni.
While those are my main concerns at the moment, I'd love to see all the army/cohort ideas people can come up with. I'd like to see this thread become a go-to source for all your mass battle needs.