Polish Underground State in the context of "Warsaw Uprising"

The German resistance to Nazism (German: Widerstand gegen den Nationalsozialismus) included unarmed and armed opposition and disobedience to the Nazi regime by various movements, groups and individuals by various means, from attempts to assassinate Adolf Hitler or to overthrow his regime, defection to the enemies of the Third Reich and sabotage against the German Army and the apparatus of repression and attempts to organize armed struggle, to open protests, rescue of persecuted persons, dissidence and "everyday resistance".

German resistance was not recognized as a united resistance movement during the height of Nazi Germany, unlike the more organised efforts in other countries, such as Italy, Denmark, the Soviet Union, Poland, Greece, Yugoslavia, France, the Netherlands, Czechoslovakia, and Norway. The German resistance consisted of small, isolated groups that were unable to mobilize mass political opposition. Individual attacks on Nazi authority, sabotage, and the disclosure of information regarding Nazi armaments factories to the Allies, as by the Austrian resistance group led by Heinrich Maier, occurred. One strategy was to persuade leaders of the Wehrmacht to stage a coup d'état against the regime; the 20 July plot of 1944 against Hitler was intended to trigger such a coup. Hundreds of thousands of Germans had deserted from the Wehrmacht, many defected to the Allies or the anti-Fascist resistance forces, and after 1943, the Soviet Union made attempts to launch a guerrilla warfare in Germany with such defectors and allowed the members of the National Committee for a Free Germany which consisted mostly of the German prisoners of war to be engaged in the military operations of the Red Army and form small military units.

The Ministry of Public Security (Polish: Ministerstwo Bezpieczeństwa Publicznego), was the secret police, intelligence and counter-espionage agency operating in the Polish People's Republic. From 1945 to 1954 it was known as the Security Office (Urząd Bezpieczeństwa, UB), and from 1956 to 1990 as the Security Service (Służba Bezpieczeństwa, SB).

The initial UB was headed by Public Security General Stanisław Radkiewicz and supervised by Jakub Berman of the Polish Politburo. The main goal of the Department of Security was the swift eradication of anti-communist structures and socio-political base of the Polish Underground State, as well as the persecution of former underground soldiers of the Home Army (Armia Krajowa) and later anti-communist organizations like Freedom and Independence (WiN).

The Polish government-in-exile, officially known as the Government of the Republic of Poland in exile (Polish: Rząd Rzeczypospolitej Polskiej na uchodźstwie), was the government in exile of Poland formed in the aftermath of the Invasion of Poland of September 1939, and the subsequent occupation of Poland by Germany, the Soviet Union, and the Slovak Republic, which brought to an end the Second Polish Republic.

Despite the occupation of Poland by hostile powers, the government-in-exile exerted considerable influence in Poland during World War II through the structures of the Polish Underground State and its military arm, the Armia Krajowa (Home Army) resistance. Abroad, under the authority of the government-in-exile, Polish military units that had escaped the occupation fought under their own commanders as part of Allied forces in Europe, Africa, and the Middle East.

The Home Army (Polish: Armia Krajowa, pronounced [ˈarmja kraˈjɔva]; abbreviated AK) was the dominant resistance movement in German-occupied Poland during World War II. The Home Army was formed in February 1942 from the earlier Związek Walki Zbrojnej (Armed Resistance) established in the aftermath of the German and Soviet invasions in September 1939. Over the next two years, the Home Army absorbed most of the other Polish partisans and underground forces. Its allegiance was to the Polish government-in-exile in London, and it constituted the armed wing of what came to be known as the Polish Underground State. Estimates of the Home Army's 1944 strength range between 200,000 and 600,000. The latter number made the Home Army not only Poland's largest underground resistance movement but, along with Soviet and Yugoslav partisans, one of Europe's largest World War II underground movements.

The Home Army sabotaged German transports bound for the Eastern Front in the Soviet Union, destroying German supplies and tying down substantial German forces. It also fought pitched battles against the Germans, particularly in 1943 and in Operation Tempest from January 1944. The Home Army's most widely known operation was the Warsaw Uprising of August–October 1944. The Home Army also defended Polish civilians against atrocities by Germany's Ukrainian and Lithuanian collaborators. Its attitude toward Jews remains a controversial topic.

In Poland, the resistance movement during World War II was led by the Home Army. The Polish resistance is notable among others for disrupting German supply lines to the Eastern Front (damaging or destroying 1/8 of all rail transports), and providing intelligence reports to the British intelligence agencies (providing 43% of all reports from occupied Europe). It was a part of the Polish Underground State.

Operation Tempest or Operation Burza (Polish: akcja „Burza”, sometimes referred to in English as "Operation Storm") was a series of uprisings conducted during World War II against occupying German forces by the Polish Home Army (Armia Krajowa, abbreviated AK), the dominant force in the Polish resistance.

Operation Tempest's objective was to seize control of German-occupied cities and areas while the Germans were preparing their defenses against the advancing Soviet Red Army. The Polish Underground State hoped to take power before the Soviets arrived.

Krajowa Rada Narodowa in Polish (translated as State National Council or Homeland National Council, abbreviated to KRN) was a parliament-like political body created during the later stages of World War II in German-occupied Warsaw, Poland. It was intended as a communist-controlled center of authority, challenging organs of the Polish Underground State. The existence of the KRN was later accepted by the Soviet Union and the council became to a large extent subjugated and controlled by the Soviets.

The KRN was established on the night of 31 December 1943 on the initiative of the Polish communist party, the Polish Workers' Party (PPR), then led by Władysław Gomułka. It was the implementation of the party's Central Committee decision of 7 November 1943. The council was declared to be the "actual political representation of the Polish nation, empowered to act on behalf of the nation and manage its affairs until the time of Poland's liberation from the occupation". From the beginning, the KRN viewed the prewar Sanation government and the contemporary Polish government in exile as illegitimate, based on the "elitist-totalitarian" April Constitution, "whose legality had never been recognized by the nation", and as representative of narrow reactionary interests. The new government formation would be based on the "worker-peasant alliance" and on the alliance with the Soviet Union. The Armia Ludowa was established as the KRN's armed force. The exile government and the Polish Underground State, especially the Armia Krajowa command, were worried by this development and by the progressing social radicalization in Poland by Soviet strings. They accelerated the formation of the already planned Council of National Unity (Rada Jedności Narodowej, RJN), their own parliament, created on 9 January 1944.