The book covers the organization, tactics, uniforms, equipment, and general information about the Mexican Army from 1837-1847, essentially the War of Texas Independence and the Mexican-American War. For anyone interested in the Mexican Army during this period, I can highly recommend this book. It provides a comprehensive examination of virtually every aspect of the Mexican Army. For example, the book clearly describes the uniforms worn by Mexican forces including changes by year. In addition to the text descriptions of uniforms it includes 23 plates that illustrate approximately 65 different uniforms and nearly 20 flags. In addition to the uniform information, the book includes organizational and historical information about many of the units of the Mexican Army. The depth of the material is so great that it even includes hard to find information such as: pay rates, details about weapons used, tactics employed, and a list of which units fought in each of the battles of the Mexican-American War. Overall, a must buy for anyone interested in the Mexican Army in the mid-Nineteenth Century.