The warhorse has long been emblematic of medieval chivalry and power, depicted in art, literature, and the grand narratives of knightly valor. Yet, behind these depictions lies a nuanced history that intertwines the fate of the warhorse with the social, political, and military developments of its time. This book, The Warhorse in England: 1272-1327, seeks to illuminate the warhorse's essential role during the reigns of Edward I and Edward II-an era marked by almost perpetual conflict and the zenith of cavalry use in English warfare. Drawing on an extensive range of primary sources, including previously unpublished army inventories, royal stable records, and medieval veterinary texts, this study goes beyond the warhorse's symbolic representation to examine its practical importance in military campaigns. It considers the full lifecycle of these animals, from breeding and training to deployment, and the toll that warfare exacted on their health. In doing so, it reveals not only the substantial investment of resources required to sustain warhorse populations but also the implications of their care on medieval administrative and logistical practices. This work also engages with a broader context, integrating perspectives from military history and animal studies to reevaluate how warhorses influenced the structure of armies and the experiences of those who relied upon them. By examining equine practices through meticulous analysis of financial records, army lists, and breeding documentation, this book provides fresh insights into medieval England's martial landscape and the interplay between human and animal agency.