After Nazi Germany invaded the Soviet Union on 22 June 1941, and the Wehrmacht reached Estonia in July 1941, most Estonians greeted the Germans with relatively open arms and hoped to restore independence. But it soon became clear that sovereignty was out of the question. Estonia became a part of the German-occupied "Ostland". A "Sicherheitspolizei" was established for internal security under the leadership of Ain-Ervin Mere. The initial enthusiasm that accompanied the liberation from Soviet occupation quickly waned as a result, and the Germans had limited success in recruiting volunteers. The draft was introduced in 1942, resulting in some 3,400 men fleeing to Finland to fight in the Finnish Army rather than join the Germans. Finnish Infantry Regiment 200 (Estonian: "soomepoisid") was formed out of Estonian volunteers in Finland. With the Allied victory over Germany becoming certain in 1944, the only option to save Estonia's independence was to stave off a new Soviet invasion of Estonia until Germany's capitulation.