The leader of the resistance in Poland during World War II was Władysław Sikorski, who headed the Polish government-in-exile and led efforts against German occupation. Additionally, local resistance movements like the Home Army (Armia Krajowa) played a crucial role in underground activities, sabotage, and intelligence operations against occupying forces. Sikorski's leadership and the Home Army’s actions were pivotal during key events such as the Warsaw Uprising in 1944. These resistance efforts sought to preserve Polish sovereignty and maintain morale among the populace despite the harsh conditions under German control, significantly impacting Polish nationalism and post-war reconstruction.