The precursor of the agency that would become the Cipher Bureau was created in May 1919, during the Polish-Soviet War (1919–21), and played a vital role in securing Poland's survival and victory in that war.
Pendahulu dari badan tersebut yang bakal menjadi Biro Cipher dibuat pada Mei 1919, saat Perang Polandia-Soviet (1919–21), dan memainkan peran penting dalam mengamankan keselamatan dan kemenangan Polandia dalam perang tersebut.