[Nicolas7507]

Dear Forum,

I hope you don't mind that my first post is a help request.
My name is Nicolas and I collect WW2 Militaria for around 1 year.
I am looking for any information about this man. This is what I have:

Nachname: Wendel
Vorname: Helmuth
Dienstgrad: Major
Geburtsdatum: 07.10.1895
Geburtsort: Erfurt
Todes-/Vermisstendatum: 04.07.1943
Todes-/Vermisstenort: Ortslaz. Sarajevo/Bosnien

He was, with his brother, Udets Kettenhund. What does that mean?
Any info about his death or/and plane

Thanks and Best Regards,
Nicolas