First Battle of the Masurian Lakes

First Battle of the Masurian Lakes
Part of the Eastern Front during World War I

Eastern Front to 26 September 1914.
Date7–14 September 1914
LocationEast Prussia, Germany (present-day Poland)
Result German victory
 German Empire  Russian Empire
Commanders and leaders
Paul von Hindenburg Paul von Rennenkampf
German Eighth Army: 16 infantry and 2 cavalry divisions - 215,000 soldiers[1] Russian First Army: 16,5 infantry and 5 cavalry divisions; Russian Tenth Army: 6 infantry divisions - 470,000 soldiers and 20,000 sabers; total 490,000 men
Casualties and losses

10,000 killed, wounded and missing[2][3]

another estimate: 40,000 killed, wounded and missing[4][5][6][7][8][9][10]
another estimate: 70,000 killed, wounded and missing[11][12][13]
100,000[14][15]-125,000 killed, wounded and missing,[16][17][18] including 30,000[19]-45,000 prisoners

The First Battle of the Masurian Lakes was a German offensive in the Eastern Front during the early stages of World War I. It pushed the Russian First Army back across its entire front, eventually ejecting it from Germany. Further progress was hampered by the arrival of the Russian Tenth Army on the Germans' left flank.


The Russian offensive in East Prussia had started well enough, with General Paul von Rennenkampf's First Army (Army of the Neman) forcing the Germans westward from the border towards Königsberg. Meanwhile, the Russian Second Army invaded from the south, hoping to cut the Germans off in the area around the city. German Colonel Max Hoffmann claimed that he developed a plan to encircle the Second Army as it maneuvered north over some particularly hilly terrain. His commanders in the German Eighth Army, Paul von Hindenburg and Erich Ludendorff, also claimed credit. Regardless of authorship, the plan was quickly implemented, culminating in the destruction of the Second Army at the Battle of Tannenberg between 26 and 30 August 1914.

Hoffmann claimed also that the German success was made possible, in part, due to the personal enmity between the Russian generals, which he had learned about as an observer in the Russo-Japanese War. The commander of the Second Army, Alexander Samsonov, had publicly criticized Rennenkampf some years earlier (about the Battle of Mukden in 1905), and it was rumored that the two had come to blows over the matter. Hoffmann claimed that, therefore, the two Russian generals would never cooperate.[20][21] The official Russian inquiry about their disaster in East Prussia blamed the general commanding the two armies, Yakov Zhilinsky.[22] In their memoirs, neither Hindenburg nor Ludendorff mention the alleged feud. When Rennenkampf was finally ordered to go to Samsonov's aid, it was too late.

By the time the battle proper ended on 30 August (Samsonov disappeared, a probable suicide, on 29 August), the closest of Rennenkampf's units, his II Corps, was still over 45 miles (70 km) from the pocket. In order to get even this close, his units had to rush southward, and were now spread out over a long line running southward from just east of Königsberg. An attack by the German Eighth Army from the west would flank the entire army. Of course the Germans were also far away, but unlike the Russians, the Germans could easily close the distance using their rail network in the area.

On 31 August, with Tannenberg lost, Zhilinsky ordered Rennenkampf to stand his ground in the event of a German attack. Realizing his forces were too spread out to be effective, he ordered a withdrawal to a line running from Königsberg's defensive works in the north to the Masurian Lakes near Angerburg (Węgorzewo, Poland) in the south, anchored on the Angrapa River. Bolstering his forces were the newly formed XXVI Corp, which he placed in front of Königsberg, moving his more experienced troops south into his main line. His forces also included two infantry divisions held in reserve. All in all, he appeared to be in an excellent position to await the arrival of the Russian Tenth Army, forming up to his south.


General staff of the German 8th Army during the battle.

German efforts at mopping up the remains of the Second Army were essentially complete by 2 September and Hindenburg immediately started moving his units to meet the southern end of Rennenkampf's line. He was able to safely ignore the Russian right (in the north), which was in front of the extensive defensive works outside of Königsberg. Adding to his force were two newly arrived Corps from the Western Front, the Guards Reserve Corps and the XI Corps. Then, like Rennenkampf, Hindenburg fed his newest troops into the northern end of the line and planned an offensive against the south. But unlike Rennenkampf, Hindenburg had enough forces not only to cover the entire front in the Insterburg Gap, but had additional forces left over. He sent his most capable units, the I Corps and XVII Corps, far to the south of the lines near the middle of the Lakes, and sent the 3rd Reserve Division even further south to Lyck, about 30 miles from the southern end of Rennenkampf's line.

Hindenburg's southern divisions began their attack on the 7th of September, with the battle proper opening the next day. Throughout the 8th of September the German forces in the north hammered at the Russian forces facing them, forcing an orderly retreat eastward. In the south, however, things were going much worse. The German XVII Corps had met their counterpart, the Russian II, but were at this point outnumbered. The II maneuvered well, and by the end of the day had managed to get their left flank into position for a flanking attack on the Germans, potentially encircling them.

However, all hope of a Russian victory vanished the following day when then the German I Corps arrived in support of the XVII; now the Russians were outflanked. Meanwhile, the 3rd Reserve Division had engaged the Russians' XXII Corps even further south, and after a fierce battle forced them to fall back southeastward; its commander wired Rennenkampf he had been attacked and defeated near Lyck, and could do nothing but withdraw. Rennenkampf ordered a counteroffensive in the north to buy time to reform his lines, managing to push the German XX Corps back a number of miles. However the Germans did not stop to reform their lines but instead continued their advances in the south and north. This left the victorious Russian troops isolated but still able to retreat to new lines being set up in the east.

Now the battle turned decisively in the Germans' favor. By 11 September the Russians had been pushed back to a line running from Insterburg to Angerburg in the north, with a huge flanking maneuver developing to the south. It was at this point that the threat of encirclement appeared possible. Rennenkampf ordered a general retreat toward the Russian border, which happened rapidly under the protection of a strong rear guard. It was this speed that enabled the retreating Russian troops to escape the trap Hindenburg had planned for them. The German commander had ordered his wings to quicken their march as much as possible, but a trivial accident—a rumor of a Russian counterattack—cost the Germans half a day's march, allowing the Russians to escape to the east. These reached Gumbinnen the next day, and Stallupönen on the 13th. The remains of the First Army retreated to the safety of their own border forts. Likewise, the Tenth Army was forced back into Russia. German casualties were about 70,000, Russian 100,000 plus 45,000 prisoners.[23]


The Eighth Army had now completed one of the most astounding victories in history, completely destroying the Second Army, mauling the First, and ejecting all Russian troops from German soil. Meanwhile, new German corps (under von der Goltz) were able to use this movement to safely move into position to harass the scattered remains of the Second Army, while far to the southwest the new German Ninth was forming up. It would not be long before they were able to face the Russians in a position of numerical superiority.

However, this advantage was bought at a cost: the newly arrived corps had been sent from the Western front and their absence would be felt in the upcoming Battle of the Marne. Much of the territory taken by the Germans would later be lost to a Russian counterattack during September 25–28.[24] In addition, although these German victories were strategically significant, other major battles of the Eastern Front were to take place between Austria-Hungary and Russia far to the south, where the Russian forces were initially able to rout the Austro-Hungarian army. It took another year before the German and Austro-Hungarian forces were finally able to reverse the Russian advances, pushing them out of Galicia and then Russian Poland.

See also


  1. Hans Niemann, Hindenburgs Siegeszug gegen Rußland, Berlin : Mittler & Sohn, 1917, p. 44.
  2. David Eggenberger, An Encyclopedia of Battles: Accounts of Over 1,560 Battles, 2012, p. 270
  3. Dennis Cove,Ian Westwell, History of World War I, 2002, p. 157
  4. Spencer C. Tucker. World War I: The Definitive Encyclopedia and Document Collection. ABC-CLIO. 2014. P. 1048
  5. Spencer C. Tucker. The European Powers in the First World War: An Encyclopedia. Routledge. 2013. P. 232
  6. Timothy C. Dowling. Russia at War: From the Mongol Conquest to Afghanistan, Chechnya, and Beyond. ABC-CLIO. 2014. P. 509
  7. Spencer C. Tucker, Priscilla Mary Roberts. Encyclopedia Of World War I: A Political, Social, And Military History. ABC-CLIO, 2005. P. 378
  8. Prit Buttar. Collision of Empires: The War on the Eastern Front in 1914. Osprey Publishing. 2014. P. 239
  9. Spencer Tucker, Priscilla Mary Roberts (2005). World War I: A Student Encyclopedia. ABC-CLIO. 2005. P. 613
  11. Tucker S. The Great War, 1914-1918. Routledge. 2002. P. 44
  12. Gray, Randall; Argyle, Christopher (1990–91). Chronicle of the First World War. New York: Oxford. p. vol. I, 282.
  13. F. Kagan, R. Higham. The Military History of Tsarist Russia. Springer, 2016. P. 230
  14. Tucker S. The Great War, 1914-1918. Routledge. 2002. P. 44
  15. Gray, Randall; Argyle, Christopher (1990–91). Chronicle of the First World War. New York: Oxford. p. vol. I, 282.
  16. David Eggenberger, (2012), p. 270
  17. Christine Hatt, The First World War, 1914-18, 2007, p. 15
  18. Roger Chickering, Imperial Germany and the Great War, 1914-1918, 2004, p. 26
  19. F. Kagan, R. Higham. The Military History of Tsarist Russia. Springer, 2016. P. 230
  20. Max Hoffman, The Truth About Tannenberg, included in Vol. II of War Diaries and Other Papers, translated by Eric Sutton, Secker, London, 1929, p. 314
  21. Barbara Tuchman, The Guns of August, 1962, Dell, New York, p. 327
  22. Bohon, John W. (1996) “Zhilinsky, Yakov Grigorevich (1953-c.1920)” in The European Powers in the First World War. Tucker, Spencer C. (ed), Garland, New York
  23. Gray, Randall; Argyle, Christopher (1990–91). Chronicle of the First World War. New York: Oxford. p. vol. I, 282.
  24. Spencer C. Tucker. World War I: The Definitive Encyclopedia and Document Collection. ABC-CLIO. 2014. P. 1048

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