Help searching documents on Luftwaffe in Greece 1943

[mimithem]

Hello guys,

my question is very specific. I am searching for documents of operations (like ORB's or diaries) of the following Luftwaffe units:

1)III/JG27 & IV/JG27
2)I/StG3
3)2.NaGr2
4)I/TG4
5)Flugplatz Kdo B5/VII

from August 1943 to December 1943. Those units operated in Greece during 1943. Can someone guide me where to search for any formal reports, missions, aircraft, crew, claims, times or anything else?

I know Budesarchiv is ideal but how can I find these documents? Shall I send a question to Bundesarchiv or is it possible to find docs online?

Thank you very much

Themis