Journals kept by Patrick while serving in the Union Army. Documents his role in the 2nd Battle of Bull Run, Va., (1862); the Maryland Campaign (1862); the Battle of Gettysburg, Pa., (1863); operations along the Rapidan River, Va., (1863); Battle of Cold Harbor, Va., (1864); seige of Petersburg, Va., (1864-1865); and the entry of Union troops into Richmond, Va. Discusses the operations of the U.S. Army of the Potomac, Ambrose Everett Burnside, Ulysses S. Grant, Joseph Hooker, Abraham Lincoln, George Brinton McClellan, George Gordon Meade, and Edwin McMasters Stanton.