Columbia subject headings:
Great Britain. Army--Commando troops--History--20th century.
Special forces (Military science)--Great Britain--History--20th century.
Harvard subject headings:
Great Britain. Army--Commando troops--History--20th century.
Special forces (Military science)--Great Britain--History--20th century.
Princeton subject headings:
Great Britain--History, Military--20th century.
Great Britain--History, Naval--20th century.