[1] Born in Rzeszów, Juliusz Kazimierz Kaden-Bandrowski studied piano at conservatories in Lwów, Kraków and Leipzig.
During World War I, he served as aide to Józef Piłsudski and as chronicler to the First Brigade of the Polish Legions.
During World War II, Kaden-Bandrowski declined to leave German-occupied Warsaw, to which he had moved during the Interbellum.
His novels show penetrating insights and fidelity to facts; behaviorist and expressionist elements; and strikingly unusual combinations of diverse styles and literary techniques.
By his wife, Romana, née Szpak (1882–1962; she had a son, Kazimierz Lewiński, an engineer who graduated from the Paris Polytechnique, from her first marriage), Kaden-Bandrowski had twin sons: Andrzej (1920–43), a Home Army second lieutenant who died in action in Warsaw in June 1943; and Paweł (1920–44), a Home Army lieutenant who fought in the Warsaw Uprising and fell in the Czerniaków neighborhood of Warsaw's Mokotów district on 15 September 1944.