Translation of a Cavalry rank?

[Crossroads]

Anyone familiar with rank titles in English, of US or Commonwealth variation, do you have anything similar to this:

Captain of cavalry:
- German rittmeister,
- Swedish: ryttmästare,
- Finnish: ratsumestari,

but apparently there doesn't seem to be any equivalents in English?

So, if I want to point out this particular officer comes from Cavalry, and possibly even commands a Cavalry unit, would the translation then indeed be Captain of Cavalry?

The unit he would command would be of course not a Company but a Squadron of men (ahem: dragoons), so perhaps a modern or contemporary Armored unit rank would be available?

Or, would that be just plain confusing, and Captain be the proper generic title to use?

There are other peculiarities in lower ranks but I'll put those aside. However many of these men served as Battalion commanders too and I would like to get their ranks properly displayed in the OoBs.

Thanks!