It's a new documentary show on History Channel about western volunteers, particularly American ones, who traveled to Iraq and Syria in order to help with the fight against ISIS: https://www.history.com/shows/hunting-isis
I just finished watching the first episode and I am JACKED. I'd be lying if I said there wasn't a part of me that would like to go back and do some operating.
Most of the volunteers are attached to Kurdish units: The Peshmerga in Iraq and the YPG in Syria.
Would highly recommend watching this show.