The Battle of Tannenberg Line (; ; ) was a military engagement between the German Army Detachment "Narwa" and the Soviet Leningrad Front. They fought for the strategically important Narva Isthmus from 25 July to 10 August 1944. The battle was fought on the Eastern Front during World War II. The strategic aim of the Soviet Estonian Operation was to reoccupy Estonia as a favourable base for the invasions of Finland and East Prussia. Several Western scholars refer to it as the Battle of the European SS for the 24 volunteer infantry battalions from Denmark, East Prussia, Flanders, Holland, Norway, and Wallonia within the Waffen-SS. Roughly half of the infantry consisted of local Estonian conscripts motivated to resist the looming Soviet re-occupation. The German force of 22,250 men held off 13