In 1929, while the Cipher Bureau's predecessor agency was still headed by Major Franciszek Pokorny (a relative of the outstanding World War I Austro-Hungarian Army cryptologist, Captain Herman Pokorny), Ciężki, Franciszek Pokorny, and a civilian Bureau associate, Antoni Palluth, taught a secret cryptology course at Poznań University for selected mathematics students. Over ten years later, during World War II while in France, one of the students, Marian Rejewski, would discover that the entire course had been taught from French General Marcel Givièrge's book, "Cours de cryptographie" (Course of Cryptography), published in 1925.