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.
Władysław Langner
During the Polish Defensive War of September 1939, Władysław Langner assumed command of all the Polish forces stationed in and around the city of Lwów. Although most of the regular Polish forces normally stationed in the area were transported to the front, he managed to organize the defence of both the city and its area. With march battalions, rear troops, marauders and raw recruits, he prepared the city for the fight. He commanded his forces during fights against the Wehrmacht and the Red Army, which later became known as the Battle of Lwów. Although his troops were badly outnumbered, outflanked and under equipped, the defense lasted ten days, after which General Langner surrendered the city to the Red Army so as to, according to his own words, "not endanger further the lives of the people and risk the destruction of the city".