Columbia subject headings:
Mercenary troops.
Switzerland--History, Military.
Zurich (Switzerland)--Social conditions.
Harvard subject headings:
Swiss mercenaries.
Zurich (Switzerland)--History, Military.
Princeton subject headings:
Europe--History, Military--18th century.
Europe--History, Military--19th century.
Swiss mercenaries.
Zurich (Switzerland : Canton)--Economic conditions.
Zurich (Switzerland : Canton)--Social conditions.