ww1 gunner in a warplane was just a guy in the second seat with a handgun
presumably footage from the Ukraine war of a guy in the second seat aiming with a hand gun. On the plane there are markings of how many shahed drones they shot down.
Honestly, I wish that NCD posts would include a "context" link, since a lot of times they reference things that have happened within very recent periods of time. I get that some people are totally up on the news, but some people -- even if they generally follow military issues -- aren't going to know about the most-recent happenings.