‘There never was so fine an American army,’ wrote second-lieutenant, John Sedgwick, in describing the troops under Major-General Zachary Taylor in 1846. Another then second-lieutenant, destined to see many more armies; U.S. Grant, also thought highly of them: ‘The rank and file were probably inferior … to the volunteers that participated in all the later battles of the war; but they were brave men, and then drill and discipline brought out all there was in them.’ Philip Katcher writes the story of the regulars and volunteers who fought in the Mexican-American War, detailing the infantry, cavalry, artillery and staff of both the American and Mexican armies.