[PvK]

If your Ulmish army doesn't have enough heavy infantry, build the lesser-equipped Versions until it does, then later build the more heavily-armored ones. The Plate + Shield ones are better at surviving very powerful blows, but even the guys in chainmail with no shield can survive a lot of abuse, and they can be built about twice as fast.

I bet arbalests can do some good work in storms, because (I assume) their reload time of 3 means their net rate of fire is less effected by not being able to fire for a turn or two (since reloading probably isn't interrupted (reloading isn't even interrupted by melee, even though it should be...) - just firing).

Since Ulmish heavy troops take a long time to build, it's important to keep them alive longer by including fodder in your armies. Guys who are there mainly to get killed instead of your expensive troops.

The Black Knights (and Templars) are generally too expensive to try to make your head-on force. I've had much more luck using them as a delayed flanking force, so they don't charge straight into something too dense and deadly.

Ulm should avoid using its heavy armor against foes that bypass their heavy armor - you need to find something cheaper and without the heavy armor to throw at such threats.

PvK