The art of warfare in Western Europe during the Middle Ages: from the eighth century to 1340
- 2nd ed.
- Woodbridge, U.K.: The Boydell Press, 1997
- 388p.
- Warfare in History series .
First published in 1954 in Belgium.Translated from the original Flemish by Col. Sumner Willard, U.S Military Academy, and Mrs R W Southern.