Mertens transferred to Jagdgeschwader 3 flying with their 9 Staffel (squadron) in the Battle of Britain as his unit provided escort cover for German bombers attacking England and on 26 October 1940 he shot down another Hurricane fighter.
Mertens transferred to Jagdgeschwader 3. Mertens were flying with their 9 Staffel (squadron) in the Battle of Britain. His unit provided escort cover for German bombers and on 26 October 1940. These German bombers were attacking England. He shot down another Hurricane fighter.