The Polish Underground State (Polish: Polskie Państwo Podziemne, also known as the Polish Secret State)[a] was a single political and military entity formed...

invasion marked the end of the Second Polish Republic, though Poland never formally surrendered. A Polish Underground State with a government-in-exile that...

of the Polish Underground State. The largest of all Polish resistance organizations was the Armia Krajowa (Home Army, AK), loyal to the Polish government...

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...

Polish underground press, devoted to prohibited materials (sl. Polish: bibuła, lit. semitransparent blotting paper or, alternatively, Polish: drugi obieg...

had a unique underground administration maintained by the Polish Underground State. For regional divisions of Poland by the underground army known as...

Soviet invasion of Poland, established in 1998 27 September – Polish Underground State's Day, Dzień Podziemnego Państwa Polskiego, set on the anniversary...

media related to Monument to the Polish Underground State and Home Army. The Monument to the Polish Underground State and Home Army is located on Wiejska...

(1918–19) Sejny Uprising Silesian Uprisings Polish Underground State Armia Krajowa (the Home Army), Polish underground army in World War II (400 000 sworn members)...

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...