Dr. Ilkka Syvänne gained his doctorate in history in 2004 from the University of Tampere in his native Finland. Since then he has written extensively about ancient and medieval warfare and his publications include: The Age of Hippotoxotai, Art of War in Roman Military Revival and Disaster 491-636 (Tampere UP 2004), The Reign of Gallienus (Pen & Sword, 2019), the multivolume Military History of Late Rome published by Pen & Sword and the critically acclaimed Caracalla. A Military Biography also published by Pen & Sword. He is the co-author with Professor Katarzyna Maksymiuk of the Military History of Third Century Iran (Siedlce UP, 2018) and the Military History of Fifth Century Iran (Siedlce UP, 2019). He was Vice Chairman of the Finnish Society for Byzantine Studies from 2007 until 2016. He has been an Affiliated Professor of the University of Haifa since 2016. He lives in Kangasala, Finland.