Straż Graniczna was founded in 1928. During the times of the Second Polish Republic, it was responsible for northern, western and southern border of Poland (with Germany, Free City of Gdańsk, sea border, Czechoslovakia and Romania). Eastern border, often raided by military bands supported by Soviet Union was under the jurisdiction of a separate, military formation (Border Defence Corps, Korpus Ochrony Pogranicza - KOP). Responsibilities of Straż Graniczna included: