In the last year of the American Civil War, Horace Porter served as aide-de-camp to General Ulysses S. Grant, then commander of all the armies of the North. This lively 1897 memoir was written from the extensive notes he took during that time. It is highly regarded by later historians. Porter continued in that position with Grant to 1869. From 1869 to 1872 he served Grant as personal secretary in the White House. He was U.S. ambassador to France from 1897-1905.