BI Unit Stats Guide?

[Red Harvest]

Thanks

I'm still trying to find a description of the movement speeds for various units.

You would most likely have to find what skeleton they are using. That sort of info is in descr_model_battle.txt in RTW. While it doesn't give the actual speeds there are some interesting things of note in RTW 1.3:
There are now four horse skeletons in use, with a slower cataphract, and in between "medium horse" where as before it was just light and heavy. I've tested and there are now four speeds (plus camels and elephants.) There are also new "semi_fast" and "slow" models in use for a number of skirmishers, swordsmen and the like. I haven't done any "races" for these yet, but I'm pretty sure that it use do be just "fast" and vanilla. No "slow" or "semi_fast."

I doubt that speeds have been changed for existing skeletons. Instead, I think new skeletons were added to slow things down incrementally.

[dismal]

I also looked for the any info with respect to the shield wall capability and didn't see it.

I couldn't even see a parameter that indicated which units were capable of it, let alone how it affects the unit stats.

The manual says it gives a "massive defense bonus", but makes them vulnerable form flank or rear.