Columbia subject headings:
Animals--War use.
Human-animal relationships--20th century--History.
Nature and civilization--Great Britain--History.
World War, 1914-1918--Campaigns--Western Front.
World War, 1914-1918--Psychological aspects.
World War, 1914-1918--Social aspects--Great Britain.
Harvard subject headings:
Princeton subject headings:
Animals--War use.
Human-animal relationships--20th century--History.
Nature and civilization--Great Britain--History.
World War, 1914-1918--Campaigns--Western Front.
World War, 1914-1918--Psychological aspects.
World War, 1914-1918--Social aspects--Great Britain.