BELAY THAT!

Check the date on Watchman's solution - it's pre EB 1.2.

I was wanting to do the same thing, and found the attachment in this post by Rovert works just dandy:

https://forums.totalwar.org/vb/showt...=1#post2254687

If you want infantry rather than cavalry bodyguards, then Watchman gives the 1.2 way to do it here:

https://forums.totalwar.org/vb/showt...=1#post2278313