This book investigates into the Polish participation in the Crusades to the Holy Land, as well as the organisation of the campaign of preaching of the Cross and the collection of resources for the support of the Crusades by the Church. By broadening the scope of enquiry to consider the application of the motifs of crusading against Poland’s pagan neighbours, local heretics or political opponents of the Church it provides conclusions which may interest the international reader. Finally, it shows the wider context of the Crusades, looking at the influence of the crusading ideology on different areas of life in medieval Poland – one of the countries of ‘young Europe’ (to use J. Kłoczowski’s term) – thus making an interesting contribution to our knowledge of European culture in the twelfth and thirteenth centuries. Forgotten Crusaders, being an attempt to take a wider look at the relationships between Poland and the crusading movement, therefore has the potential to make a valuable contribution to the state of research.