Complex sentence: The Battle of Tannenberg Line (;;) was a military engagement between the German Army Detachment "Narwa" and the Soviet Leningrad Front fought for the strategically important Narva Isthmus from 25 July to 10 August 1944.
Split into simpler sentences: 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.