Acta Periodica Duellatorum (APD) is an independent, international, and peer-reviewed journal dedicated to Historical European Martial Arts studies. This emerging field of research has interdisciplinary dimensions, including notably History, Anthropology, Historical sciences, Art History, History of Science and Technology, Archaeology, Sport Sciences, etc. APD was founded in 2013 and publishes two issues per year from 2016 onwards. APD is a non-profit association, based in Switzerland. It is supported by institutional grants, donators/partners and by its readers. The journal is published electronically (Open Access) and printed for subscribed readers and institutions.