Acta Militaria Mediaevalia is a scientific yearbook devoted to the military history of the Medieval period. It is specially aimed at historians, including those specialising in military history, arms and armour scholars, archaeologists, historians of art and architecture as well as enthusiasts and collectors. The yearbook has appeared since 2005 with the cooperation of The Historical Museum in Sanok with Polish Academy of Arts and Sciences and the Institute of Archaeology of Wrocław University. The volumes of the Acta Militaria Mediaevalia present the newest findings and analyses of medieval arms and armour from Europe and the Near East. The editorial committee cooperates with scientists from across the world, including Poland, Bulgaria, the Czech Republic, Estonia, Georgia, Germany, Russia, Romania, Slovakia, USA, Ukraine, Great Britain and Italy. The articles are published in Polish and English with extensive summaries in Polish or English. The primary format of  Acta Militaria Mediaevalia  is the paper journal, however, certain issues are also available as PDFs.