U-boat hunters : code breakers, divers and the defeat of the u-boats, 1914-1918 /
GRANT Robert M.
U-boat hunters : code breakers, divers and the defeat of the u-boats, 1914-1918 / Robert M. Grant. - Annapolis, Maryland : Naval Inst Press, 2004. - 178 pages : ill., ports. ; 22 cm.
Includes bibliographical references ( p. 162-167) and index.
In this groundbreaking book, the author explains how the code breakers at the Admiralty's Room 40 were able to break into the German naval codes during the First World War.
9781591148890 (hbk.): 32.95USD
WORLD WAR, 1914-1918 --NAVAL OPERATIONS, GERMAN
MILITARY INTELLIGENCE --GREAT BRITAIN --HISTORY --20TH CENTURY
SUBMARINE WARFARE --HISTORY --20TH CENTURY
U-boat hunters : code breakers, divers and the defeat of the u-boats, 1914-1918 / Robert M. Grant. - Annapolis, Maryland : Naval Inst Press, 2004. - 178 pages : ill., ports. ; 22 cm.
Includes bibliographical references ( p. 162-167) and index.
In this groundbreaking book, the author explains how the code breakers at the Admiralty's Room 40 were able to break into the German naval codes during the First World War.
9781591148890 (hbk.): 32.95USD
WORLD WAR, 1914-1918 --NAVAL OPERATIONS, GERMAN
MILITARY INTELLIGENCE --GREAT BRITAIN --HISTORY --20TH CENTURY
SUBMARINE WARFARE --HISTORY --20TH CENTURY