Columbia subject headings:
Harvard subject headings:
Command of troops--History--19th century.
Gettysburg, Battle of, Gettysburg, Pa., 1863
Pennsylvania--History--Civil War, 1861-1865.
United States--History--Civil War, 1861-1865--Campaigns.
Princeton subject headings:
Command of troops--History--19th century.
Gettysburg, Battle of, Gettysburg, Pa., 1863.
Pennsylvania--History--Civil War, 1861-1865.
United States--History--Civil War, 1861-1865--Campaigns.