The article presents the activity of Wacław Szyszkowski, a lawyer, an emigration independence activist and an outstanding scientist, who fought in the Polish-Bolshevik war of 1920 and, after Poland regained independence, was active in a secret Union of the Polish Youth “Zet” and a public Union of the Polish Democratic Youth. Until 1939 W. Szyszkowski was a defence lawyer in Warsaw, supporting the activities of the Central Union of the Rural Youth “Siew” and the Work Cooperative “Grupa Techniczna”. Published articles in political and legal journals, such as “Przełom”, “Naród i Państwo”, “Palestra”, “Głos Prawa”. During World War II — a conspirator of the Union for Defense of the Republic of Poland, soldier of the Union of Armed Struggle and Home Army, assigned to the Bureau of Information and Propaganda of the Home Army Headquarters. Fought in the Warsaw Uprising, after which he was deported by Germans to the Murnau oflag in Bavaria. For helping Jews during the occupation, the Yad Vashem Institute awarded him and his wife Irena the title of Righteous Among the Nations. After 1945, he remained in the West, engaging in the life of the Polish war exile in France, Great Britain and the United States. He received a doctorate in law at the Sorbonne. He belonged to the People’s Party “Wolność”, the Association of Polish Combatants. He was a member of the National Council of the Republic of Poland in Exile. As an anti-communist, he was invigilated by the communist intelligence of the People’s Republic of Poland. In the 1960s, after returning to Poland, as a lawyer and scientist, he was first affiliated with the Maria Curie-Skłodowska University of Lublin, and then with Nicolaus Copernicus University of Toruń. W. Szyszkowski is the author of nearly two hundred scientific and journalistic publications printed in Poland and abroad.