In my surfing of Wikipedia, one thing mentioned about these desert rangers (aside from being "fierce fighters") is that they are well-known as skilled trainers of falcons, often using falcons to help hunt game.

When you think about rangers, it makes sense that some form should be doing some falconry (far different from the kinship type deal of beastmasters).

So, how about this:

Bedouins can get this one little skill in the twenties or thirties:

call falcon:
Similar to call lightning, cuz you don't have to be next to the person, just in the same area, and calls a falcon to flyto the person and start pecking his ass. Nothing strong like beastcall, just engages the target in battle with this weakish but dodgy mob, giving a way for a bedouin to halt/slow the target's movement temporarily so he can try to catch him. Wouldn't work indoors, underground, etc.