The North Flank of Army Group Center and Army Group North - 18 July to 31 August 1944

1944-07-18/1944-08-31

The Battle of Tannenberg Line or the Battle of the Blue Hills 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–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 favorable base for the invasions of Finland and East Prussia. Waffen-SS forces included 24 volunteer infantry battalions from the SS Division Nordland, the SS Division Langemarck, the SS Division Nederland, and the Walloon Legion. Roughly half of the infantry consisted of the personnel of the 20th Waffen Grenadier Division of the SS (1st Estonian) motivated to regain Estonian independence rather than support Nazi power. The German force of 22,250 men held off 136,830 Soviet troops. As the Soviet forces were constantly reinforced, their overall casualties are estimated by the Germans to be 170,000 dead and wounded.

Wikipedia: Battle of Tannenberg Line