Władysław Eugeniusz Sikorski (20 May 1881 – 4 July 1943) was a Polish military and political leader. Prior to the First World War, Sikorski established and participated in several underground organizations that promoted the cause for Polish independence. He fought with distinction in the Polish Legions during the First World War, and later in the newly created Polish Army during the Polish–Soviet War of 1919 to 1921. In that war, he played a prominent role in the decisive Battle of Warsaw (1920 ...