Columbia subject headings:
Austro-Hungarian Monarchy. Heer--History--19th century.
Military art and science--Austria--History--19th century.
Harvard subject headings:
Austro-Hungarian Monarchy. Heer--History--19th century.
Military art and science--Austria--History--19th century.
Princeton subject headings:
Austro-Hungarian Monarchy. Heer--History--19th century.
Military art and science--Austro-Hungarian Monarchy--History--19th century.