Some Estonians, unwilling to side directly with the Nazis, joined the Finnish Army (which was allied with the Nazis) to fight against the Soviet Union. The Finnish Infantry Regiment 200 (Estonian: soomepoisid) was formed out of Estonian volunteers in Finland. Although many Estonians were recruited into the German armed forces (including Estonian Waffen-SS), the majority of them did so only in 1944 when the threat of a new invasion of Estonia by the Red Army had become imminent. In January 1944 Estonia was again facing the prospect of invasion from the Red Army and the last legitimate prime minister of the Republic of Estonia (according to the Constitution of the Republic of Estonia) delivered a radio address asking all able-bodied men born from 1904 through 1923 to report for military service. The call resulted in around 38,000 new enlistments and several thousand Estonians who had joined the Finnish Army came back to join the newly formed Territorial Defense Force, assigned to defend Estonia against the Soviet advance. It was hoped[by whom?] that by engaging in such a war Estonia would be able to attract Western support for Estonian independence.