Soviet forces reconquered Estonia in the autumn of 1944 after fierce battles in the northeast of the country on the Narva river (see Battle of Narva) and on the Tannenberg Line (Sinimäed). In 1944, in the face of the country being re-occupied by the Red Army, 80,000 people fled from Estonia by sea to Finland and Sweden, becoming war refugees and later, expatriates. 25,000 Estonians reached Sweden and a further 42,000 Germany. During the war about 8,000 Estonian Swedes and their family members had emigrated to Sweden. After the retreat of the Germans, about 30,000 Forest Brothers remained in hiding in the Estonian forests, to prepare for a massive guerrilla war. Commander of 46. SS Grenadier Regiment, Friedrich Kurg, stood with most of his men in the Estonian forests.