Acknowledgments; Glossary and Abbreviations; Introduction; 1 US Cavalry in the Mexican Punitive Expedition and World War I; 2 Mechanization in the Interwar US Cavalry; 3 "Traditionalists": Proponents of the Horse; 4 "Modernizers": Proponents of Mechanization; 5 "Pragmatists": Attitudes Among the Army's Future Leaders; 6 "Compromiser": Patton's Approach to Mechanization; 7 US Cavalry in World War II and the Post-War US Army; Conclusion; Endnotes; Bibliography; Biography.