Kelly Robert DeVries (born December 23, 1956) is an Americanmedievalist and military historian specializing in thewarfare of theMiddle Ages. He is often featured as an expert commentator on television documentaries. He is professor of history atLoyola University Maryland and Honorary Historical Consultant at the Royal Armouries, UK.

DeVries received his PhD in medieval studies in 1987 from theCentre for Medieval Studies at theUniversity of Toronto.^[1]

DeVries with co-editorMichael Livingston was named as one of the recipients of the 2017 Distinguished Book Award from theSociety for Military History for their bookThe Battle of Crécy: A Casebook. A second Distinguished Book Award from the Society for Military History was shared in 2020 by the two forMedieval Warfare: A Reader.^[2]

Scholia has anauthor profile forKelly DeVries.

• (1992)Medieval Military Technology Broadview Press.
• (1999)Joan of Arc: A Military Leader Gloucestershire: Sutton Publishing,ISBN 0-7509-1805-5OCLC 42957383
• (1999)The Norwegian Invasion of England in 1066 Boydell Press,ISBN 1-84383-027-2.
• (1996)Infantry Warfare in the Early Fourteenth Century Boydell Press.ISBN 0851155677OCLC 34356019
• Guns and Men in Medieval Europe
• (2002)A Cumulative Bibliography of Medieval Military History and Technology History of Warfare, Vol. 8, Brill Press.
• (2005)A Cumulative Bibliography of Medieval Military History and Technology: Update 2004 History of Warfare, Vol. 26, Brill Press (winner of theVerbruggen Prize)
• "The Lack of a Western European Military Response to the Ottoman Invasions of Eastern Europe from Nicopolis (1396) to Mohács (1526)".Medieval Warfare 1300–1450.London:Routledge. 2010. pp. 539–559.ISBN 9781315249230.

• withMatthew Bennett,Jim Bradbury,Ian Dickie andPhyllis Jestice: (2005)Fighting Techniques of the Medieval World: AD 500-AD 1500, Amber Books,ISBN 1-86227-299-9
• (2005)The Artillery of the Dukes of Burgundy 1363-1477 (co-written Robert Douglas Smith) Boydell Press.ISBN 1843831627OCLC 60322326
• (2007)Medieval Weapons: An Illustrated History of their Impact (co-written Robert Douglas Smith). ABC-CLIO.ISBN 9781851095315OCLC 163587639
• (2011)Rhodes Besieged, 1480-1522: a New History (co-written Robert Douglas Smith) History Press.
• (2012)Medieval Military Technology 2nd ed. (co-written Robert Douglas Smith) University of Toronto Press.
• (2015)The Battle of Crecy: a Casebook (co-writtenMichael Livingston) University of Liverpool Press. (UK)ISBN 9781781382646OCLC 932592007

• Loyola University Maryland: Kelly Devries
• medievalists.net (2009)."Interview with Kelly Devries"(video). YouTube.Archived from the original on December 21, 2021.

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