Beside Heroes (2016)

Wali, an ex-sniper, leaves Canada to fight the Islamic state. He meets two Americans: Rebaz and Zyrian. One is a veteran of the war in Iraq. The other is a homosexual idealist. They meet the Kurds, a welcoming people. Together, they will confront the fanatical Islamic terrorists. Beside Heroes, an uncensored documentary that tells the tale of three volunteer fighters who realized that to change the world, you have to act.

Unfortunately the movie Beside Heroes is not yet available on Disney Plus.