In The Art of War in the Middle Ages, Charles Oman synthesizes the evolution of European warfare from the late Roman world to the early sixteenth century. In lucid, Victorian prose he interweaves battle narrative with institutional history, charting the dominance of the mailed cavalryman, the return of disciplined infantry (Flemish militias, Swiss pike), the tactical primacy of the English longbow, and the disruptive entry of gunpowder and artillery. Grounded in chronicles, ordinances, and muster rolls, the book locates tactics within feudal, urban, and mercenary structures and the economics that sustained them. An Oxford military historian and later Chichele Professor, Oman combined Rankean source-criticism with a polemical impatience toward romanticized chivalry. Early work on medieval records and his lifelong reconstruction of campaigns-later perfected in his Peninsular War studies-sharpened his attention to logistics, command, and formations. Composed early in his career and revised amid professionalized historical debate, the book reflects a determination to turn episodic chronicles into a comparative, system-centered account of how societies made war. Recommended to students and specialists alike, it remains a foundational, if sometimes contested, scaffold: a clear map of problems that later archaeology and analytics refine rather than erase. Quickie Classics summarizes timeless works with precision, preserving the author's voice and keeping the prose clear, fast, and readable-distilled, never diluted. Enriched Edition extras: Introduction · Synopsis · Historical Context · Brief Analysis · 4 Reflection Q&As · Editorial Footnotes.