[Brian Bines]

The Bd ofton appears on NVMs in the crew position normally shown as Bs. As I understood things the Luftwaffe had formally trained air gunners designated Bs, and also air gunners who had weapons training but not the full air gunnery course (Bd possibly standing for Bord Dienst?). I believe there were variations on the air-gunners badge which indicated the difference. That is as I understand it, if that is not the case anymore information welcome.