Major John Henshaw, a dutiful regimental officer in the American invasion of Mexico, was one of only a handful of eyewitnesses to describe the two major theaters of that war from start to finish. But unlike most of his peers, he did not see himself as a conquering warrior and took pride in never having taken a life. He even wrote, "If I were alone, no earthly power could induce me to lend a helping hand in this base and infamous war." This book presents...