This I did not know...
The
Luftwaffe used about 50 North American NAA-57 and NAA-64
Harvards for training, liason and glider towing duties. These had been delivered to the French Air Force prior to WW2.
this NAA-64 was photographed at Guyancourt, France in early 1944.
(source: Jane's
Battles With The Luftwaffe )