5 (17) September, 1809 in the city Fredrikshamn (now Hamina, Finland) Sweden and Russia signed a peace treaty which ended the Russian-Swedish war of 1808-1809.
5 (17) September 1857 in the village of Izhevskoye, Ryazan Oblast, in the family of gamekeeper was born Konstantin Tsiolkovsky, a Russian scientist and inventor in the field of aerodynamics, rocket dynamics, theory of airplanes and airships, the founder of modern astronautics.
On September 17, 1941 I. Stalin signed the decision of the State Defense Committee ‘On general compulsory military science education of USSR citizens’.
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