Policja is the generic name for the police in Poland. The Polish police force was known as policja throughout the Second Polish Republic (1918–1939), and in modern post-communist Republic of Poland since 1990. Its current size is 100,000 officers and ca. 25,000 civilian employees. Among the branches in the force are: Criminal Service, Traffic Police Service, Prevention Service and Supporting Service. Most towns and some villages have their own city guards, which supervise public order and road safety. However, city guards have jurisdiction only over misdemeanors and in cases of crimes may serve only in a supportive role for the state police.