Personally, SelfishGene, I have to go with Daynarr here. BF Ulm, while not having a very good magical base (it IS Ulm, after all), or a very diverse troop base, has most everything you need to play.
First, the Rangers are quite powerful. As others have said, the ability to mass-produce them works very well. Second, you get excellent heavy infantry in the Morningstar Infantry of Ulm. Third, you get free, speedy, expendable flankers with the Wolfherd's wolves. They are excellent to shut down enemy archers and mages, crossbowmen especially.
Finally, you get access to slightly more diverse paths than base Ulm, and Communion. Something I've contemplated is this. Sabbath and Communion work with each other, right? So, if I enter my Vampire Queen or Blood Counts into a Sabbath while my other Mages go into Communion, and one of my Astral mages cast Astral Shield, my VQ/BCs will get the Shield without needing Astral Magic, correct? I might need this later, and thought to check now.
Also, I'm on turn 7 'in game', and I've gotten a Hero that I don't think anyone has commented on. Has anyone else seen Ulrich, the Ghoul Baron? If you want, I can post his stats when I write up his turn.
Anyway, on to the writing! Oh, and if you want to refer to me, it's "Tasogare" or "Taso" or "That incompetent supercilious idiot."
My handle is written in Japanese style.
Bayushi Tasogare