"1846" . . . . "1872" . . "Provost Marshal Generalof theArmy of the Potomac" . "Andrew Porter" . . . . . . . . . . . . "1864" . . . . "Union" . . . . . . . . . . . "United States of America" . . "Andrew Porter (Civil War general)" . "Andrew Porter (Civil War general)" . . . "1820" . . . "Porter" . . . . . . . . . . "United States" . "Porter, Andrew" . . . .