The decision to build a major seaport at the Gdynia village was made by the Polish government in the winter of 1920, in the midst of the Polish-Soviet War (1919–1920). The authorities and seaport workers of the Free City of Danzig felt Poland's economic rights in the city were being misappropriated to help fight the war.[citation needed] German dock workers went on strike, refusing to unload shipments of military supplies send from the West to aid the Polish army, and Poland realized the need for a port city it was in complete control of, economically and politically.