The Battle of Białystok was a battle of the Polish–Soviet War that took place near and within Białystok, Poland on August 22, 1920.The battle was between the 1st Infantry Regiment and withdrawing from the Warsaw remains of the RSFSR's Red Army 16th Army group and 3rd Army troops in the city of Białystok; the confusion caused by the Soviet forces chased, since the defeat at Warsaw, crushing into the forces stationed in Białystok caused complete breakdown Bolshevik forces. Within the city, fighting took all day and covered the entire Białystok. The individual parts of the city repeatedly passed from the Polish to the Russian hands and back. During the battle, several armored trains were used in combat.