Battle of Warsaw (1920)
The battle of Warsaw was fought from August 12–25, 1920 as Red Army forces commanded by Mikhail Tukhachevsky approached the Polish capital of Warsaw and the nearby Modlin Fortress. On August 16, Polish forces commanded by Józef Piłsudski counterattacked from the south, disrupting the enemy's offensive, forcing the Russian forces into a disorganized withdrawal eastward and behind the Neman River. Estimated Russian losses were 10,000 killed, 500 missing, 30,000 wounded, and 66,000 taken prisoner, compared with Polish losses of some 4,500 killed, 10,000 missing, and 22,000 wounded.
History of the Polish–Lithuanian Commonwealth (1764–1795)
Kościuszko attempted to relocate his formation to Warsaw, but was blocked by a strong Russian force led by General Fiodor Denisov. Attempting to circumvent that army, Kościuszko encountered a separate smaller Russian corps under General Alexander Tormasov. The Battle of Racławice that ensued was won with a daring charge by the "kosynierzy"; it failed to open the route to Warsaw, but lifted the spirit of the insurgents and a Polish legend was born. In the context of general military mobilization, the commander demonstrated his support for the peasants and became a symbol of their cause (and of national unity across the class spectrum).