[CJE]

Fortress Mk. I AN523/D (P/O Sturmey) was badly shot up by Bf 109s and Bf 110s over the North Sea, on 16 August 1941. Having crashed on landing, it is the first B-17 destroyed by the Luftwaffe ever.
Can anyone shed light on the German units that took part in the interception?

Thanks in advance.

Chris