The British Army that faced Napoleon in the Peninsula was small by continental standards, but it consistently out-fought larger French armies, never losing a major open-field action. Its cavalry and artillery were standard; but its infantry achieved unique results, as their tactics were brought to a peak of professional perfection by Wellington. Using contemporary instruction manuals, first-hand accounts and in-depth analysis of individual actions, this book examines exactly how Wellington was able to convert a rabble of volunteers and criminals into a well-oiled, highly disciplined and professional war-winning machine. With a detailed look at the effective use of terrain, line rather than column man oeuvres and fortification assaults, Philip Haythornthwaite reveals the crucial tactics of Wellington's army, illustrated with comprehensive maps, images and full-color artwork.