Mastering the Art of Arms, Volume 2: The Medieval Longsword Guy Windsor, 2014 The School Of European Swordsmanship.
This teaches the early 15th century Italian style of Fiore dei Liberi, with more general advice on sources, swords, clothing, protection, footgear, general principles of time, measure, structure and flow. debatable issues, drills, freeplay and its limitations, and warming up exercises.
Windsor promises to cover the German school in Volume 3.
Volume 2 is reviewed here and here.