Good video, but that guy at 1:37, shooting the flamethrower was in a USMC uniform, circa WWII. Camo helmet cover, on a US pot. Herringbone uniform, leggings and humping an M2A1 flamethrower.
Judging from the photo, i guess he’s a reinactor.
Probably, not my video, but most of the pics are from the First Chechen War.