This anthology on the conflict between Mexico and the United States from 1846 to 1848 considers the military, social, political, and diplomatic aspects of what is often referred to in Mexico as the invasion yanqui. Included are an account of President Polk's wartime tour of New England, a study of monarchist intrigues in Mexico during the war, a description of the disharmony between Polk and his generals that resulted in weakened policy formation, and, finally, a view of a soldier's life through the letters of Andrew Trussell, a volunteer.