(1831–95) Union army officer and author, born in New York City. As a lieutenant colonel, he was military secretary to Ulysses S. Grant (1864–65). Badeau wrote a three-volume Military History of Ulysses S. Grant (1868, 1881) with Grant's full cooperation. When Grant decided to write his own memoirs, Badeau, fearing rightly that this would hurt the sales of his own works on Grant, offered to work as a research assistant (though he appears to have desired greater credit) for the general's memoirs in 1884 and 1885, for $10,000. Grant severed their working relationship when newspapers accused him of letting Badeau write the manuscript. After Grant's death, Badeau sued for the remainder of his fee and won, going on to write a history of Grant's administration, Grant in Peace, from Appomattox to Mount McGregor (1887).
From The Oxford Essential Dictionary of the U.S. Military in Oxford Reference.
Subjects: Warfare and Defence.