in what was to become the Polish Army in France. Both the Polish Armed Forces in the West and the Polish Armed Forces in the East, as well as interior (partisan) forces, primarily represented by the Home Army (AK) had land forces during the Second World War. While the forces fighting under the Allied banner were supported by the Polish Air Force and Navy, the partisan forces were an exclusively land formation. The army operational today has its roots in the surrogate force formed in support of Soviet interests during the establishment of the People's Republic of Poland after the Second World War. Two Polish armies, the First Army (Poland) and the Second Army fought with the Red Army on the Eastern Front, supported by some Polish Air Force elements. The formation of a Third Army was begun but not completed. 1945–1989 The end of the war found the Polish Army in the midst of intense organisational development. Although the implementation of the Polish Front concept was abandoned, new tactical units and troop types were created. As a result of mobilisation, troop numbers in May 1945 reached 370,000 soldiers, and in September 1945 there were 440,000. Military districts were organised in liberated areas. The districts exercised direct authority over the units stationed on the territory administered by them. Returning to Poland, the Second Army was tasked with the protection of the western border of the state from Jelenia Gora to Kamien Pomorski, and on the basis of its headquarters, the staff of the Poznan Military District was created at Poznań. The southern border, from Jelenia Gora to the Użok railway station (at the junction of the Polish, the Soviet and the Czechoslovak borders) was occupied by the First Army. Its headquarters staff formed the basis of the Silesian Military District. In mid-1945, after the end of World War II, the Polish Army, as part of the overall armed forces, the People's Army of Poland, was divided into six (later seven) districts. These were the Warsaw Military District, HQ in Warsaw, the Lublin Military District, HQ in Lublin, the Kraków Military District, HQ in Kraków, the Lodz Military District, HQ in Lodz, the Poznan Military District, HQ in Poznan, the Pomeranian Military District, HQ in Torun (formed from the staff of the short-lived LWP 1st Army Corps) and the Silesian Military District, HQ in Katowice, created in the fall of 1945.