Did Turks employ mercenaries?

by asdfghjklshi

I am asking this bc while watching history videos on youtube, i realized how often nations employed mercenaries, on the other hand i can not recall any mercenaries from the past of my own nation. Do better detail the question

1)I will use the "Turkic" definition so ancestors of any of these groups are acceptable http://www.wikizero.biz/index.php?q=aHR0cHM6Ly9lbi5tLndpa2lwZWRpYS5vcmcvd2lraS9UdXJraWNfcGVvcGxlcw a)The ruler must be Turkic (although a foreign mother etc are totally acceptable) b)The target empire/khante/beylik must have a group of Turks enough to create an army from them. 2)For the purposes of the question, the mercenary group in question must be out of the Ural-Altaic family. 3)Preferably non-naval mercenaries as our naval history doesnt go that back.

Thanks for your time.

asdfghjklshi

1)b) means it must have enough Turkic citizens to draft and not be some small group of Turks in charge of a non-Turkic place, having only the local population to draft.