From Wings of Linen

The Union company produced a single four-engine bomber prototype, but its crash on 1 September 1915 spelled the end of the company. The chief designer, Karl Schopper, moved to Daimler and helped produce the similar Daimler R.I and R.II.[1]

Aircraft from the Great War or shortly thereafter include:


  1. Herris'14, p.55
  2. Herris'14, pp.55-58.
  3. Haddow'69, pp.293-294.
  • G.W. Haddow and Peter M. Grosz, The German Giants; The German R-Planes 1914-1918. New York: Funk & Wagnalls, 2nd Ed., 1969. ISBN 9780370000374
  • Jack Herris, German G-Type Bombers of WWI. Aeronaut Books, 2014. ISBN 978-1-935881-26-1.