The Fokker D.XXI fighter was designed in 1935 by Dutch aircraft manufacturer Fokker in response to requirements laid out by the Royal Netherlands East Indies Army Air Force.
VL Kotka ("Eagle") was a Finnish two-seat, biplane maritime patrol aircraft, designed and built by the Valtion lentokonetehdas or VL. It was meant as a cheaper replacement for the outdated IVL A.22 Hansas that were in service with the Finnish Air Force.
Koolhoven F.K.52 was a Dutch-designed, two-seat reconnaissance-fighter biplane, which was developed in the 1930s by Koolhoven. The aircraft was equipped with an enclosed cockpit and single-strut landing gear. Only six aircraft were produced. The aircraft saw some service in the Finnish Air Force.
The Caudron C.59 was a French, two-seat biplane with a single engine and a canvas-covered fuselage, produced between 1922 and 1924. Suitable for a variety of roles, more than 1,800 Caudron C.59s were manufactured.
The Caudron C.60 was a French two-seat biplane of the 1920s and 1930s with a single engine and a canvas-covered fuselage. The French aircraft manufacturer Caudron developed this aircraft from the Caudron C.59. It was mainly used as a trainer aircraft.
The Caudron G.3 was a single-engined French sesquiplane built by Caudron, widely used in World War I as a reconnaissance aircraft and trainer.
The Caudron G.4 was a French biplane with twin engines, widely used during World War I as a bomber. It was designed by René and Gaston Caudron as an improvement over their single-engined Caudron G.3. The aircraft employed wing warping for banking. The first G.4 was built in 1915, and it was manufactured in France, England and Italy. It was the world's first twin-engine aircraft to be widely used, starting in March 1915.
Fokker D.X was a Dutch fighter aircraft designed after World War I.
Georges Levy G.L. 40 HB2 was a three-seated French, amphibious biplane aircraft that was designed in 1917. The aircraft was designed by Blanchard and Le Pen and therefore the aircraft was also known as the Levy-Le Pen. Le Pen was Maurice Jules-Marie Le Pen born in Lorient, Morbihan, France in 1889; he was killed in a car crash in 1919. It was claimed to be the best French amphibious aircraft of World War I, but that is probably due to the low scale production of such aircraft in France at that time.
IVL C.VI.25 was a Finnish fighter aircraft designed by IVL. It was a further development of the IVL C.24.
IVL K.1 Kurki was a prototype for a four-seated, high-wing trainer aircraft, which was designed in 1927 by IVL. The designer was Asser Järvinen and the prototype was manufactured at the IVL plant at Suomenlinna. The aircraft made its maiden flight on March 30, 1927. Only one aircraft was manufactured.
The Grigorovich M-9 was a Russian World War I-era biplane flying boat, developed from the M-5 by Grigorovich.
The Thulin LA was a Swedish two-seat, single-engine biplane designed by Enoch Thulin in 1917 and made by his company AB Thulinverken in Landskrona. It was based on the earlier Thulin L and E aircraft, with a new engine, fuselage and empennage. The L and E types were in turn based on the German Albatros B.II aircraft, like the NAB Albatros. The Thulin LA was used in Sweden, the Netherlands (10) and Finland (1). This type also made the first passenger transport flights between Sweden and Denmark in 1919. Altogether there were 15 Thulin LAs built.
The Blériot-SPAD S.34 was a French twin-seat, single-engine biplane flight training aircraft designed in 1920. The side-by-side seating arrangement was unique for its time. 150 aircraft were built, 125 for the French Air Force, who used them until 1936.
The Rumpler C.VIII was a German single-engine biplane advanced trainer manufactured by Rumpler Flugzeugwerke, in Berlin Johannisthal in 1917.
The SIAI Savoia S.9 was an Italian reconnaissance flying boat, manufactured by Societa Idrovolanti Alta Italia (S.I.A.I.) from 1918. The wing structure was unusual by being a single-bay biplane wing, with additional struts mounted mid-bay at the junction of the flying and landing wires, so that it appeared to have a two-bay wing. The S.9 was also licence-built in France by CAMS as the CAMS C.9.
Raab-Katzenstein RK-26 Tigerschwalbe, also known as the Fieseler F 1 Tigerschwalbe, was a German twin-seat biplane trainer aircraft designed by Gerhard Fieseler by the end of the 1920s.
Hansa-Brandenburg W.33 was a German two-seat, single-engined low-wing monoplane floatplane, which had been developed by Hansa und Brandenburgische Flugzeugwerke during World War I as a higher powered enlargement of the similar Hansa-Brandenburg W.29 and despite the increase in size the two types are very difficult to differentiate. Although the W.33 was built in small numbers during the war many license built versions were built after World War I.
Gustaf Erik Magnusson was a Finnish major general, fighter ace and Mannerheim Cross Knight. He was the commander of the No. 24 Squadron and Flying Regiment 3 during World War II. He also flew 158 sorties as a fighter pilot and shot down 5 1/2 enemy aircraft.
Nils Edward Katajainen was a Finnish fighter pilot and a Mannerheim Cross Knight. He held the military rank of sergeant major. He flew 196 sorties and shot down 35 enemy aircraft.
