Ron Eiseleさんのイラストまとめ

Born 20 December 1892 in Strassberg, Harz, 35 victory German ace Leutnant Otto Könnecke.

19 December 1910. Baron Yoshitoshi Tokugawa (24 July 1884 – 17 April 1963), a Lieutenant General in the Imperial Japanese Army, flew Japan's first successful powered aeroplane flight (a Farman biplane) at Yoyogi Parade Ground, (presently Tokyo's Yoyogi Park).

Born 18 December 1889 in Dielsdorf, 15 victory German ace with Jasta 5, Offizierstellvertreter Edmund Nathanael.

17 December 1913. During the war with Morocco, a Lohner ‘Flecha’ B-1 of the Spanish Aeronáutica Militar used a 1912 Carbonit bombsight purchased in Germany to conduct the first systematic bombing in history by dropping 10 kilogram bombs on the plain of Ben Karrix in Morocco.

Killed in a flying accident 17 December 1917 at Auchel, 9 victory French Air Service ace Capitaine Mathieu Tenant de la Tour.

16 December 1944. Beginning of the Ardennes Offensive (also known as the 'Battle of the Bulge' and the Von Rundstedt Offensive). To support the offensive, the Luftwaffe had assembled some 2,460 combat aircraft, including 1,770 single-engine fighters.

15 December 1939. First flight of the Kimura HK-1. Japanese glider prototype to investigate the possibilities of tailless aircraft. It was a single-seat design with an open cockpit, swept wings, and a single tail fin.

15 December 1924. Lt. Clyde V. Finter in a skyhook equipped Verville-Sperry M1 Messenger biplane successfully docked midair with Army Air Service TC3 dirigible 1,200 ft. over Scott Field. The first aeroplane to hook-on and release from another aircraft in flight.

14 December 1915. First Canadian aerial combat victory when Flight Sub Lieutenant Arthur Ince, a RFC Observer flying a Nieuport 10 with Flight Sub-Lieutenant Graham shot down a German seaplane off the coast of Belgium. He was awarded the Distinguished Service Cross.

13 December 1967. 14.08.00 UTC/GMT. Launch of Pioneer 8 from Cape Canaveral LC-17B. American satellite engaged in research and exploration of the upper atmosphere or outer space.