 KLM received 14 F.IIIs from Fokker's German factory at Schwerin during 1921 and built two more itself from spares in the following year.This final pair used Rolls-Royce Eagle VIII engines, with the pilot on the left.Another operator of new F.IIIs was "Deutsch-Russiche Luftverkehrs Gesellschaft" ("Deruluft") which used nine aircraft on their Berlin-Königsberg-Moscow route from May 1922.