Idflieg aircraft designation system

The Idflieg (Inspekteur der Flieger) designation system was used to classify German heavier-than-air military (as opposed to naval) aircraft from the early days of the Fliegertruppe/Luftstreitkräfte to the end of World War I. The system evolved during this period as new classes of aircraft came into use.

The specific, official "name" of a Luftstreitkräfte aircraft type consisted of the name of the manufacturer, the designation allocated to its class or category, and finally a Roman numeral. Thus the first "D"-class aircraft built by Albatros was named the Albatros D.I, the second was the Albatros D.II and so on.