After the war, the Finnish military placed part of the weapons of the demobilized troops into several hundred caches distributed around the country. The caches would have been used to arm guerillas in case of a Soviet occupation. When the matter was leaked to the public, the commission required Finnish authorities to investigate and prosecute the officers and men responsible for the caching. The Weapons Cache Case was followed closely until the ACC determined that the case was purely a military operation. The Allied Control Commission left Finland September 26, 1947, when the Soviet Union finally ratified the Paris Peace Treaty.