It was introduced in April 1918, and was widely used on the Italian Front in the final months of World War I.

[1][2] The UFAG C.I incorporated the best features of the Brandenburg C.II(U) with single-bay wings and 'I' strut inter-plane bracing, which was replaced wing conventional steel-tube interplane struts in production aircraft.

More manoeuvrable than the Phönix C.I, the C.I had good performance, but suffered from a few odd handling characteristics.

[1][2] Production of the C.I continued after the Armistice by MARE and was also built by the Neuschloss-Lichtig factory as the NL Sportplane.

[2] Data from:Austro-Hungarian Army Aircraft of World War One[2] The C.I was widely used by the KuKLFT on the Italian front by at least 30 Fliks.