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.
Battle of Wola Cyrusowa
Due to the strategic errors made by Gen. Juliusz Rómmel, the commander of the Łódź Army, the Polish units that were to form a defensive wedge against the German assault towards Warsaw were dislocated too close to the German border. Because of that, the Piotrków Operational Group, along with the rest of that army's units, entered contact with enemy forces already on September 1 and lost the chance to successfully support the Kraków Army and Poznań Army, defending the areas on both flanks. Also, the German superiority in mobile units meant that the Polish forces had it difficult to break off the enemy and regain strategic initiative.