Columbia subject headings:
Austria--History, Military.
Austria--History--Ferdinand II, 1619-1637.
Habsburg, House of--History.
Thirty Years' War, 1618-1648--Campaigns--Austria.
Harvard subject headings:
Austria--History--Ferdinand II, 1619-1637
Habsburg, House of--History--17th century.
Thirty Years' War, 1618-1648--Campaigns--Austria.
Princeton subject headings: