Columbia subject headings:
Cryptographers--Great Britain--Biography.
Great Britain--History, Military--1789-1820.
Great Britain. Army--Officers--Biography.
Napoleonic Wars, 1800-1815--Cryptography.
Peninsular War, 1807-1814--Campaigns--Participation, British.
Scovell, George, 1774-1861.
Harvard subject headings:
Cryptographers--Great Britain--Biography.
Great Britain--History, Military--1789-1820
Great Britain. Army--Officers--Biography.
Napoleon I, Emperor of the French, 1769-1821--Adversaries.
Peninsular War, 1807-1814--Campaigns--Participation, British.
Scovell, George, 1774-1861.
Princeton subject headings:
Cryptographers--Great Britain--Biography.
Great Britain--History, Military--1789-1820.
Great Britain. Army--Officers--Biography.
Napoleonic Wars, 1800-1815--Cryptography.
Peninsular War, 1807-1814--Campaigns--Participation, British.
Scovell, George, 19th cent.