Battle of Stallupönen

Battle of Stallupönen
Part of the Eastern Front of World War I

Eastern Front, August 17–23, 1914.
Date17 August [O.S. 4 August] 1914
Location
Stallupönen, East Prussia (now Nesterov, Russia)
Result Russian victory
Belligerents
German Empire Russian Empire
Commanders and leaders
Hermann von François Paul von Rennenkampf
Units involved
I Corps 25th Infantry Division
27th Infantry Division
29th Infantry Division
40th Infantry Division
Strength
18,000 50,000
Casualties and losses
1,500 619 killed
2,382 wounded
4,466 captured
Total:
7,467

The Battle of Stallupönen, fought between Russian and German armies on August 17, 1914, was the opening battle of World War I on the Eastern Front. The Germans under the command of Hermann von François conducted a successful counterattack against four Russian infantry divisions from different infantry corps, which heavily outnumbered them but were separated from each other, creating a gap between the 27th Infantry Division and the 40th Infantry Division, and had little coordination with each other. The Germans retreated to Gumbinnen thereafter.