The Aviatik C.I was an observation aircraft which came into service during World War I in April 1915. It was a development of the Aviatik B.I and B.II models, being one of first aircraft of the new German C class of armed biplanes. In the C.I the observer sat in front of the pilot, with a machine-gun clipped on a sliding mounting fitted on a rail at either side of the cockpit. It gave the crew the means to attack enemy aircraft. The positions of the pilot and observer were reversed in last series of 50, ordered in 1917 solely for trainer purpose. There was only one aircraft built of refined C.Ia version in May 1916, with armament still in a forward cab, serving as a prototype for C.III. Later models of the plane included the Aviatik C.II and the C.III, which had more powerful engines. The C.III was produced in large numbers.
The Friedrichshafen FF.43 was a German single-seat floatplane fighter of the 1910s produced by Flugzeugbau Friedrichshafen.
The Siemens-Schuckert D.III was a German single-seat fighter built by Siemens-Schuckert Werke. The D.III was a development of the earlier Siemens-Schuckert D.IIc prototype. The D.III was an (nearly) equal-span biplane powered by a 160 hp (119 kW) Siemens-Halske Sh.III bi-rotary engine. Idflieg placed an order for 20 aircraft in December 1917, followed by a second order of 30 aircraft in February 1918.
The Daimler D.I was a German fighter aircraft of World War I. It was a conventional biplane design with a very small interplane gap - the top wing nearly touched the top of the fuselage. Power was provided by a Daimler D.IIIb water-cooled V-8 engine.
The Junkers CL.I was a ground-attack aircraft developed in Germany during World War I. Its construction was undertaken by Junkers under the designation J 8 as proof of Hugo Junkers' belief in the monoplane, after his firm had been required by the Idflieg to submit a biplane as its entry in a competition to select a ground-attack aircraft. The J 8 design took the J 7 fighter as its starting point, but had a longer fuselage to accommodate a tail gunner, and larger wings. The prototype flew in late 1917 and was followed over the next few months by three more development aircraft. The Idflieg was sufficiently impressed to want to order the type, but had misgivings about Junkers' ability to manufacture the aircraft in quantity and considered asking Linke-Hoffmann to produce the type under licence. Finally, however, Junkers was allowed to undertake the manufacture as part of a joint venture with Fokker, producing a slightly modified version of the J 8 design as the J 10. Like the other Junkers designs of the period, the aircraft featured a metal framework that was skinned with corrugated duralumin sheets. 47 examples were delivered before the Armistice, including three built as floatplanes under the designation CLS.I. After the war, one or two CL.Is were converted for commercial service by enclosing the rear cockpit under a canopy.
The Pfalz Dr.I was a German fighter prototype of World War I. Official interest in the potential of the triplane configuration for single-seat fighters prompted Pfalz to develop the Dr.I. It underwent initial testing in October 1917, and an initial batch of 10 aircraft were shipped to the Front and arrived in April 1918.
The Daimler L14 was a two-seat, high-wing, monoplane fighter built in 1919. It was built as a two-person, aerodynamically improved version of the Daimler L11 aircraft. It was powered by the Daimler D.IIIb water-cooled V-8 engine and was armed with two 7.92 mm (0.312 in) machine guns, one forward and one rearward firing. One prototype was built. The L14V, an unbuilt mail carrier variant was offered for sale to Chile but no orders followed.
The Daimler L11 was a German single-seat, parasol-wing, monoplane fighter built during the First World War for the Imperial German Air Service. A single prototype was built in 1918, but the war ended before it could be accepted for service. The two-seat Daimler L14 was based on this aircraft.
The Aviatik D.II was a prototype German single-seat biplane fighter aircraft built by Aviatik during World War I. Only a single aircraft was built, but no production order followed. It later had its conventional wings replaced by bird-shaped wings and has been referred to as the Geest Fighter in this guise. Further development was discontinued.
The Aviatik D.III was a German prototype single-seater fighter plane from the First World War, designed by Aviatik. It became the basis for the Aviatik D.IV and Aviatik D.V. In November 1917, the plane was first flown, using a 195 hp Benz Bz IIIbo gearless engine. It was of similar design to the Aviatik D.II, and was armed with two LMG 08/15 machine guns. After several tests at Adlershof from February 9–12, 1918, the plane underwent modifications, as requested by the Idflieg. In April, a second prototype, powered by a Benz Bz IIIbm, although several D.III powered by the original IIIbo engine were already under production; however, none of them were ever completed.
The Kondor E 3, sometimes erroneously known as E.III, was a German single seat, monoplane fighter aircraft designed and built close to the end of World War I. Though successful in the third D-type fighter competition at Aldershof in September 1918, only a few were produced, given the Idflieg designation of Kondor D.I.
The Kondor D 7 was a prototype German single seat biplane fighter built over the winter of 1917-18. It was not a success and its development was soon abandoned.
The Kondor D 6 was a prototype German biplane fighter aircraft flown in 1918. In the interests of better upward vision for the pilot, its upper wing was in two halves, separated over the central fuselage. Its development was soon abandoned.
The Aviatik C.IX was a prototype German observation aircraft built by Aviatik in the final months of World War I.
The Aviatik C.VIII was a prototype German observation aircraft built by Aviatik in World War I.
The Kondor D 1, given the unofficial name Kondorlaus, was a German single seat, biplane fighter aircraft designed and built close to the end of WWI.
The Kondor D 2 was a German single seat, biplane fighter aircraft designed and built close to the end of World War I.
The Aviatik D.VI was a German prototype single-seater fighter aircraft of the First World War, designed by Aviatik.
The Daimler CL.I was a prototype two-seat fighter built in Germany during World War I.
The Märkische D.I was a prototype single-seat fighter biplane built in the last months of World War I.
