"Thou shall not invade Poland"
Warsaw Uprising was a major World War II operation conducted by the Polish government-in-exile, United States, Great Britain, South Africa with a support from the Soviet Union.
During late 1944 war seemed to be turning in favour of Allies. On June 6, 1944 Operation Overlord was executed to land on Normandy's beaches and liberate France. Simultaneously, 15kT nuclear device was detonated over city of Potsdam on June 7, with a next one exploded over Munich two days later. Refusal of surrender had caused Wehrmacht generals to launch unsuccessful coup d'etat against Adolf Hitler, with the help of rebellious troops located in the Western Front. Allies used that to advance as quickest they could - on June 11, Operation Dragoon liberated Marseilles and Toulon, three days later Charles de Gaulle's motorized infantry reached Paris. By the end of June, whole France and Belgium were liberated. During July 1944, Allies crossed into Central Germany where they encountered significant resistance (when anti-Nazi officers were executed in the Reich).
Operation Tempest was created by the Polish government-in-exile, British Prime Minister Winston Churchill and American President James F. Byrnes who wanted to reduce postwar Soviet influence on Europe. Home Army (Armia Krajowa) was supplied by the United States Air Force and the Royal Air Force with guns, ammunition and even light anti-tank weapons to overtake local German garrisons and prevent Red Army from "liberating" Poland. On August 1, 20,000 of Polish fighters arose against German garrison of the city. A day later, Polish 1st Independent Parachute Brigade and American 17th Airborne Division landed in Praga suburb. Seeing no other choice, Joseph Stalin ordered Polish First Army (part of the Red Army) to advance across the Vistula river, hoping to gain as much influence on Warsaw inhabitants as possible. Within next 12 days, German forces either surrendered or were pushed away from the city. From the Presidential Palace, Tadeusz Bór-Komorowski announced creation of the pro-Western, capitalist Third Polish Republic.
Wehrmacht and SS soldiers shortly before being machine gunned by the NSZ fighters.
After discovery of the German death camps, 5,000 Prisoners of War were executed by the Polish nationalist partisans National Armed Forces (Narodowe Siły Zbrojne) and other, smaller groups often formed by civillians disgruntled with a five-years' long brutal occupation and national humilitation. Killings were stopped only after arrivance of Dwight D. Eisenhower, who ordered American Military Police to restore order (which resulted in a few "heated discussions" between Polish partisans and Americans).
Shortly after battle of Berlin conducted by the American-British-Franco-Polish forces, member of the Anders' Army raised the Polish flag over Reichstag. This image can be seen in the Presidential Palace of the Third Polish Republic. It still remains a source of pride for Poles. (August 21, 1944)