Well, for the American I have found tons of information regarding their structure and sorry to say, while finding tons of photos, it seems hard to get information deeper in the German structure.

I agree. Still, it a bit strange because I have found plenty of information regarding American structure and through my favorite publisher, Osprey have i found extremely much information regarding Geschwader, Gruppe and Staffel, but not anything regarding the airfield structure their self more than some briefly.