The Second Battle of the Masurian Lakes was fought in the winter 1915, on the Eastern Front. This battle is also known as the Winter Battle of the Masurian Lakes. The German Eight Army was led by Otto von Below. The German Tenth Army (recently created force) was led by Colonel-General Hermann von Eichhorn. This army was also sent to the east. The German army faced Russian Tenth Army. The place of the battle was an area near the Masurian Lakes.
The battle started on 7 February, when German forces attacked the Russian Army. They attacked in the middle of a snowstorm, which made defense harder for the Russians. During the first week, the German Army advanced 70 miles. The Russians lost many soldiers while they were in retreat. Also, many of them were taken as prisoners. The Russians 20th Army was surrounded by the German Tenth Army, on 21 February. The entire corps was forced to surrender. However, the Russian Army got the time to form a new line of defense. The Russian Twelfth Army attacked the German Army on 22 February and stopped any further progress.
The Second Battle of Masurian Lakes is important because it ended the German offensive in Russia. The Russian Army had severe losses, but they managed to stop the German progress. The Germans failed to knock Russia out of the World War I.
The Russian Army had at its disposal 220.000 soldiers. 200.000 of them were killed, wounded or missing. On the other side, The German Army had at its disposal 100.000 soldiers. 16.200 of them were wounded, missing or killed.