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This photo was marked Alb
CI,  Die Maschine mit welcher Fritz den Flug von Köln [or Koeln] -
Hannover, Meissen-Magdeburg-Köln ausführte.  Translations welcome. 
My understanding is this is Kempf before a cross country trip, maybe for his pilot
training.

Lt. Horling (sic) & Kempf in an Aviatik B.1 in 1915
Have a look at a page from
From this time.

This photo has to be taken after Kempf received his Pilot's Badge, (7/22/16)