The Red Army reached the Estonian borders again in early 1944, but its advance into Estonia was stopped in heavy fighting near Narva for six months by German forces, including numerous Estonian units. In March, the Soviet Air Force carried out heavy bombing raids against Tallinn and other Estonian towns. In July, the Soviets started a major offensive from the south, forcing the Germans to abandon mainland Estonia in September, with the Estonian islands being abandoned in November. As German forces were retreating from Tallinn, the last pre-war prime minister Jüri Uluots appointed a government headed by Otto Tief in an unsuccessful attempt to restore Estonia's independence. Tens of thousands of people, including most of the Estonian Swedes, fled westwards to avoid the new Soviet occupation.