["HISTORY \/ Military \/ General","HISTORY \/ Military \/ Wars & Conflicts (Other)","HISTORY \/ United States \/ Civil War Period (1850-1877)","TECHNOLOGY & ENGINEERING \/ Military Science","Gettysburg (Pa.), Battle of, 1863","Gettysburg (Pa.), Battle of, 1863.","GENERAL","General Adult","Gettysburg (Pa.), Battle of, 1863","Gettysburg (Pa.), Battle of, 1863.","HISTORY \/ Military \/ General","HISTORY \/ Military \/ Wars & Conflicts (Other)","HISTORY \/ United States \/ Civil War Period (1850-1877)","MILITARY HISTORY - U.S. CIVIL","Military","Non-Fiction","TECHNOLOGY & ENGINEERING \/ Military Science","United States"]