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.
Józef Poniatowski
In 1806, after the creation of the Duchy of Warsaw, Józef Poniatowski was appointed the minister of war. In 1809 he commanded a 16,000-strong army during the Austro-Polish War and achieved tactical success over a larger and more experienced Austrian force in the battle of Raszyn. This was followed by the advance into the territory of Galicia. The conflict ended with a Polish victory which allowed the Duchy to partially recover lands once lost in the Partitions of Poland.