You are most welcome Vince. I understand that your uncle was OCHS, Dr. Albrecht Otto Bismarck. (DOB: 30.09.96). 26.02.39 promo to Hptm.(d.R.). 16.04.40 Hptm., appt Staka 4./JG 3 (to 30.06.40). 01.07.40 Hptm., appt Staka 9./JG 3 (to 30.09.40).?
Excerpt from the Luftwaffe Officers Career Summaries here
http://ww2.dk/lwoffz.html