The author attempts to present Professor Jakliński paying particular attention to what created such a great personality of Polish forensic medicine. Professor Andrzej Jakliński grew up in difficult times, which required a lot of sacrifice, even self-sacrifice and making choices that not always depended on him. That is why this article focuses on Professor Jakliński’s childhood and adolescence, his escape from the Russian occupation zone to the German General Government, as well as the battles which he fought within the structures of the Home Army against the Germans and the incident that determined his life and brought him to Lublin.