Jarosław Jerzak (born 1956, in Poznań) is a member of the Festung Poznań Aficionados Association. He is passionate about the subject of the fortifications of Poznań, armoured warfare and the history of the fighting for the Poznań Fortress in 1945. He has served in the Polish armoured forces, where he acquired a deep interest in the use of tanks in all theatres of battle in World War Two. He is the co-author of Armoured Assault Reserve as well as the author of a book about the Soviet armoured forces in the battle for Poznań.
Maciej Karalus (born 1974) is a passionate and independent researcher of World War II history, and particularly of the battle for Festung Poznań in 1945. In 2003, together with Jarosław Jerzak, he published Armoured Assault Reserve – Poznań 1945, which has launched a series devoted to the events of Festung Posen in 1945. The series contributed significantly to the growing interest in the history of the battle for Poznań. Since 2002, he has been an active member of the POMOST (Bridge) Association for the Polish-German reconciliation, and publisher of POMOST Publishing House since 2007.