Looks like he has Brit captain rank on. These range shoots are probably fam fire, in which people get together to shoot each others weapons. He has a red Kifaya on, which is Shia. Not sure if Shia are in Astan. He probably did time in Basra and picked up the scarf there, it he is a brit. Hard to tell from the poor quality of the video. Camo almost looks like German, and the hat doesn't look British either.
Who else uses diamond rank on their shoulder boards?