Hello,
FFS A 23 at Kaufbeuren - Sattelite at Baltringen - One of the aircraft used was the Fiat L3*. Personally, never heard of it!
http://www.ww2.dk/air/schule/ffsab23.htm
1./JG 106 also a possibility:
http://www.ww2.dk/air/jagd/jg106.html (1./JG 106)
http://www.ww2.dk/Airfields%20-%20Ge...20Borders].pdf - (BALTRINGEN - pp.41-2 of 726)
* Barry Rosch, in his Luftwaffe Codes, Markings & Units 1939-1945, (p.387) also mentions the Fiat L3 in relation to FFS (A) 23.
Col.