Second Battle of the Masurian Lakes

Second Battle of the Masurian Lakes
Part of the Eastern Front during World War I
Eastern Front, February 7–18, 1915
Date 7–28 February 1915 Location East Prussia, German Empire (present-day Poland) Result German victory
Belligerents
German Empire	Russian Empire
Commanders and leaders
Paul von Hindenburg Erich Ludendorff Max Hoffmann Otto von Below Hermann von Eichhorn Georg von der Marwitz	Nikolai Ruzsky Thadeus von Sievers Pavel Plehve
Units involved
8th Army 10th Army	10th Army 12th Army
Strength
Total: 275,261 men[1] 400 machine guns 1082 guns	126,000 total 11.5 infantry and 2 cavalry divisions[2]
Casualties and losses
official German medical reports: Total 31,827[3] (including 1,706 prisoners) 8th Army 3,497 KIA 1,588 MIA 11,163 WIA 10th Army 3,013 KIA 3,188 MIA 9,378 WIA Lost:[4] 15 machine guns 6 guns	official Russian medical reports: 56,000 total casualties[5][6] including 11,000 POWs[7]

The Second Battle of the Masurian Lakes or Winter Battle of the Masurian Lakes, known in Germany as the Winter Battle in Masuria and in Russia as the Battle of Augustowo,^[8] was the northern part of the Central Powers' offensive on the Eastern Front in the winter of 1915 during World War I. The offensive was intended to advance beyond the Vistula River and perhaps knock Russia out of the war. It was the last major battle fought on German soil during World War I.^[8]