All information on this page is obtained from a great booklet " Lightblue on the Veluwe" by Drs. M.E. Peters, which I recommend and which is available at the Museum Air Base Deelen, worth a visit, Gebouw 20, Hoenderloseweg 10, 6816 SW Arnhem/Deelen.

• 1910 - Clement van Maasdijk died in a crash of his Sommer Bi-plane during an exercise run in preparation for an Air Show to be held on the Kemperbergse heath fields North of Warnsborn, part of nowadays Deelen AB.
• 1914 Air strip build by the Royal Dutch Army and occupied by 9 Henri Farman F-20's and F-22's for reconnaissance.
• 1919 KLM Airlines officially erected.
• 1928-34 KLM organized pleasure flights across Holland and used the Deelen Air strip.
• 1940 Deelen Air strip destroyed by Dutch Army before capitulating to the German Army.
• 1940-41 Luftwaffe rebuild "Fliegerhorst Deelen" into a modern Air Base in the famous -A-configuration, with 60 hangars and an ultra modern infra structure, including a dummy airport further to the North, a huge air traffic control center "Diogenes" and radar station "Teerosen".  Airplanes occupying Deelen were: Messerschnitt Bf 110, -Bf 109, -Me 410, Junkers Ju 88, -Ju 188, Dornier Do 17, -Do 217, Focke Wulf 190, Heinkel He 219 and advanced preparations were found at Deelen AB for the housing of the Messerschnitt Me 163 jet fighter and the V-2 rocket.
• 1944 Deelen bombed by 94 RAF Avro Lancasters and taken out of commission.
• 1946 KLM had an eye on Deelen to make it into the biggest civilian airport of that time. But already then nature protecting activists within government put an end to this dream.
• 1946-47 Deelen was used as a Canadian Demob Vehicle Park occupied by 10th of thousands of tanks and vehicles.
• 1947 Deelen became the center for technical education of the RDAF.
• 1947-51 Rebuilding of the runways.
• 1951-57 Deelen housed 298 Squadron: Auster Mk. III, Piper L-18C and Hiller H-23B.
• 1956-57 Deelen housed 299 Squadron: Piper L-18C, Piper L-21A and Hiller H-23B.
• 1957-63 Deelen housed 306 Squadron: Republic RF-84F and Lockheed T-33A.
• 1962-95 Deelen housed 299 Squadron: Piper L-21B, Hiller H-23B, Sud Avion SE 3160, Messerschnitt Bolkow and Blohm BO-105C.
• 1976 Deelen was decor for the movie "A bridge too far" with rebuilt Horsa gliders and DC-47's.
• 1992 Deelen was attacked by peace activists who penetrated security and managed to damaged 8 and destroy 1 Bolkow helicopters.
• 1995 Deelen AB is put on non active status.
• Deelen has and is being used as an exercise terrain for the transport helicopter groups of the Royal Dutch Air Force and the Air Mobile Brigade.