Why Do Poles Fight, Even When It is Hopeless?

I would like to reflect briefly on just two Polish last stands in the 20^th century: the Battle of Zadwórze (August 17, 1920), during the Polish-Soviet War, and the Battle of Wizna (September 7-10, 1939) during the September Campaign of 1939.  The former last stand was against the Communists and the latter against the Nazis. Why do the Poles fight, even when it is hopeless?

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