Developed from the G.II of 1913, the G.III was a two-seat sesquiplane powered by a 59.6kW Le Rhone, Gnome or Anzani engine mounted in the nose of the short crew nacelle. Originally operated by French squadrons as reconnaissance aircraft over the Western Front and then in less dangerous theatres of war, the G.III subsequently became a trainer, serving also with the British, Belgian, Italian and American forces.