Non composite recurve bows used by the auxiliary archers?

[D B Campbell]

Has anyone come across any hard evidence for auxiliary archers using non composite recurve bows?

What's a non-composite recurve bow?
I may be showing my ignorance, but I assumed that a recurve bow was a composite bow!

I am gearing up to do a 1st century western auxiliary archer and want to get all the information I can on it.

Again, my ignorance may be showing, but I assumed that all archer units were of eastern origin. (Whether they continued to recruit there is unclear.) The units themselves seem to be Hamian, or Palmyrene, or Petraean, etc.
(Of course, non-archer units seem to have been trained in archery, but that's another matter.)

Is there a specific "western" unit you had in mind?