The European Medieval double-edged sword develops in the 11th century from the Viking Age sword. Already in the 10th century, some of the finest examples of the Ulfberht type of Viking swords began to exhibit a more slender blade geometry, moving the centre of mass closer to the hilt. In collaboration with the Deutsches Klingen-Museum, the LVR-Landes Museum Bonn, the Royal Armouries, and Mr H. Cole MBE (archaeo-blacksmith), we propose to study a group of 4 Medieval double-edged swords and a replica of Solingen sword to obtain information on their manufacture method and composition. We intend to undertake a comprehensive non-destructive study of the aforementioned samples using neutron tomography, transmission spectroscopy, TOF-ND, neutron strain scanning, and negative muon implantation.