Białystok
The Podlaska Cavalry Brigade was a military unit of the Polish Army, created on April 1, 1937. Its headquarters was in Białystok. It was formed from the Cavalry Brigade "Białystok", which existed between February 1929, and March 30, 1937. After the Soviet invasion of Poland, remnants of the Brigade fought both Wehrmacht and Red Army troops, surrendering on October 6, 1939.