The Battle of Warsaw (Russian: Варшáвское сражéние, Polish: Bitwa Warszawska; sometimes referred to as the Miracle at the Vistula, Polish: Cud nad Wisłą) was the decisive battle of the Polish–Soviet War, which began soon after the end of World War I in 1918 and lasting until the Treaty of Riga (1921). The Battle of Warsaw was fought from 13 to 25 August 1920 as Red Army forces commanded by Mikhail Tukhachevsky approached the Polish capital of Warsaw and nearby Modlin Fortress. On August 16, Polish forces commanded by Józef Piłsudski counterattacked from the south, forcing the Russian forces into a disorganised withdrawal eastward and behind the Niemen River. Estimated Bolshevik losses were 10,000 killed, 500 missing, 10,000 wounded and 66,000 taken prisoner, compared with Polish losses of some 4,500 killed, 10,000 missing and 22,000 wounded. Before the Polish victory at the Vistula, both the Bolsheviks and the majority of foreign experts considered Poland to be on the verge of defeat. The stunning, unexpected Polish victory crippled the Bolshevik forces. In the following months, several more Polish victories secured Poland's independence and eastern borders.