One small update - transcription (from machine typed original) of mission listing of spanish squadron 15./J.G. 51, unfortunately the documentation that I've got from Spanish Air Force Archives only starts on 15 July 1943. Tried to get the earlier dates (1 to 14 July 1943) but somehow I was not successful.
http://yogysoft.de/pawel/_kursk/unit...mbat_diary.pdf
best regards,
Pawel