by Jim DeBrosse
management of
and MIT Group
Navy approaches Desch about
and Navy’s desire for electronic machine
and Navy’s promises to Desch
and Navy’s trust in Desch’s judgment
and NCR-Navy relationship
NCR’s relationship with
need for fluidity in
and OP20G’s order to scratch Bombe design
pressures on
priority for
problems of
production/manufacturing phase of
prototypes in
and Pythons
questions about development of
resentment toward British by
resources for
secrecy/security about
staffing for
subcontractors for
as success
testing operation in
and Turing’s U.S. visit
and U-boat intelligence
WAVES work on
wheel design in
See also American Bombes; specific prototype or code system
Dayton-Wright Company
Decryption Group
Deeds, Edward A.
deferments, draft
Delco Division (GM)
Denniston, Alastair G.
and British-American relations
and Driscoll
and exchange missions to England
and Friedman
steps down as head of Bletchley Park
U.S. visit of
“depth,”
depth charges
Desch, Augusta Stoermer (mother)
Desch, Debbie. See Anderson, Debbie
Desch, Dorothy Brockman (wife)
Desch, Edward Frank (father)
Desch, Joe
awards for
breakdown of
burning of papers by
Bush recruits
childhood and youth of
Dayton project as challenge for
death of
and deferments for Dayton project employees
designs of
and destruction of Bombes
education of
family background of
health of
management style of
marriage of
Meader’s relationship with
and MIT Group
motivation for
Navy recruitment of
NCR career of
NDRC approaches
personal background of
personal life of
personality of
postwar activities of
pressures on
professional career of
and religion
reputation of
resignation from Army of
retirement of
in ROTC
and secrecy of Dayton project
security clearance for
as supervisor
Tropp’s interview of
Turing’s memo about Dayton visit never shown to
and V-J Day
views about war of
and WAVES
and Wenger
and Wright (Orville)
See also American Bombes; Dayton project
Diagonal Board
“differencing,”
differential analyzers
diplomatic codes
and British-American relations
and postwar activities
See also specific code system
direction-finding equipment
Dolphin system
Dönitz, Karl
Donovan, William “Wild Bill,”
“double-input” feature (American Bombes)
draft
deferments from
and Montgomery
Driscoll, Agnes May
and British-American relations
catalog of
and Coral
dealings with male counterparts in Navy by
Denniston’s meeting with
Enigma work of
and exchange mission to England
German U-boat codes and ciphers work of
list of questions of
and MIT Group
as old guard
and old vs. new generation of codebreakers
personal/private life of
professional career of
pushing aside of
and Red Book
refuses invitation to visit England
resources for
security clearance for
students of
successes of
switches from Japanese to Atlantic problems
and Turing’s work
Driscoll, Michael Bernard
drive and gearing system
Duenna (American machine)
Eachus, Joe
Eastman Kodak
ECM (American machine)
Edison, Thomas A.
Einfeldt, Evelyn Urich
Einstein, Albert
electrical flow
electrical research division (NCR)
Desch as head of
founding of
Navy takes over Desch’s
as showplace for NCR
See also Dayton project
electromechanics
electronic counters
Desch-designed
digital
radiation
electronics
and Bush’s work
and Copperheads
and Dayton project
development of, at NCR
and differences between American and British Bombes
digital
and Duenna
and Fish system
hopes for machine of all-
and Japanese codes
and MIT projects
and NCR in postwar years
and NCR-MIT link
and Selector
Ely, Robert B.
Engineering Research Associates (ERA)
England. See Bletchley Park; British Bombes; British-American relations
Engstrom, Howard T.
and autonomy of Dayton project
breakdown of
British information given to
and British request for American Bombes
and British-American relations
and brushes
and design of an all-purpose electronic “computer,”
and development of double-unit Bombe
and Duenna
and Enigma
and history of American Bombe project
and IBM machines
influence of
and Japanese codes
as M section leader
and OP20G’s order to scratch Bombe design
personal and professional background of
postwar activities of
and pressures on Desch
and problems of Dayton project
and rewind feature
and scheme for scientific cryptanalysis
and Shark
and Turing’s memo about Dayton visit
and Uncle Dora
and wheel design
and Yamamoto’s death
See also M section
Engstrom, Kristina
Enigma
Allied breakthrough into
Americans focus on
and analysis of German naval communications
and Battle of the Atlantic
British capture of German materials about
British send Americans list of settings for
and British-American relations
ciphering possibilities of
clones of
and Dayton project security issues
and Denniston’s U.S. visit
and Driscoll-Denniston meeting
Driscoll’s work on
electrical flow in
and exchange missions
German changes to
German erro
rs in using
German security for
Keen’s work on
and M-8 and M-9 as Enigma analog machine
mock-up of
and Navy hopes for an all-electronic machine
and Navy ordered to forge its own Enigma-cracking capability
Navy’s early attempts to crack
Navy’s lack of information about
and old vs. new generation of codebreakers
OP20G promise to let British oversee
and OP20G’s plans to practice Enigma decryption
“39” version of
Turing’s work on
weaknesses of
Wenger forms new American team for
See also British Bombes
Eskey, Sue Unger
exchange missions
Fabyan, George
factory workers, motivation of
Fasson, Anthony
Federal Bureau of Investigation (FBI)
background checks on employees by
and Montgomery affair
and Navy
and Ultra
Federapparat (FAT) torpedoes
Fehler, Johann Heinrich
Fiehtner, Peg
“fight-back” strategy
“Fire Engines” (inverted American Bombes)
Firor, Dorothy
Fish (German system)
512th Army ordnance unit, U.S.
Flowers, Commander
Forrestal, James
four-wheel Bombes
American
British
British request for American
and British-American relations
comparison of British and American
number of American, in operation in 1943
problems with
reliability of
and Shark
speed of
and Turing’s U.S. trip
U.S. Army-designed
four-wheel Enigmas
and British Bombes
and British request for American Bombes
changes in
and Desch’s plan for American Bombe
and Engstrom’s M section
and flexibility of American Bombes
Germans switch to
and Turing’s U.S. trip
four-wheel Shark
Fowler, Alex
Franklin Chronicle
French code systems
Friedman, Elizebeth
Friedman, William
Frigidaire Division (GM)
Führer Conference (June 1943)
funding
for Bush
for codebreaking operations
corporations as source of
for Dayton project
and development of American Bombes
and Driscoll’s work on Enigma
for IBM
for MIT
for OP20G
Gallery, Dan
Gaschk, Milton
GCCS (Government Code and Cypher School). See Bletchley Park; British-American relations; specific person or project
General Electric
General Motors
German Army and Air Force codes/ciphers
American Bombes decryption of
British decryption of
and British-American relations
and D Day
and Desch’s plan for American Bombe
and exchange mission to England
Keen’s work on
switch in
and Uncle D
See also Bovril
German codes/ciphers
changes to
and exchange mission to England
Japanese link to
postwar decryption of
security of
German diplomatic codes/ciphers
German merchant-marine codes/ciphers
German naval codes/ciphers
American work on
and British attempts to break Enigma
British break into
change in
and Denniston’s U.S. visit
Driscoll’s work on
and exchange mission to England
and Fish
OP20G begins intercepting and logging
German Navy, new tactics and weapons of
Germany
and Japan given German technological advances
Japan as source of information about
Montgomery’s letters to
surrender of
GI (translation section)
Giant (British machine)
Gladwin, Lee A.
Gleason, Andrew
Goldberg, Emanuel
Goodrich, Charles
Granddad (double-unit American Bombe)
Grazier, Colin
Greenland
Grenade attachments
“Group Trutz,” 12
Groves, Leslie
guilt
Gulden, Vince
GY-A
GYA-2
Hall, Marshall
Hastings, Edward
Hebern, Edward Hugh
Hiroshima, Japan
Hitler, Adolf
hits
HMS Petard
Hodges, Andrew
Hogan, Robert
Holden, Carl
Holden agreement
Hooper, Stanford C.
Hoover, J. Edgar
“hot point,”
Hottenstein, Esther
Howard, John
Hulick, Veronica Mackey
Hypo (American machine)
IBM
IFF (Identity Friend or Foe) system
IMB
Index of Conicidence (IC)
Indian Ocean, U-boats in
intercepted messages, American processes for decoding
International Congress of Photography
inverted American Bombes
Italian code system
“Jackpots,”
Jade (JN-127) (Japanese code)
Japan
and British-American relations
German technological advances given to
Red Book dumped by
as source of information about Germany
and two-front war OP20G organization
surrender of
Japanese code/cipher system
and American Bombes
Americans work on
British decryption of
and British-American relations
changing of
and Dayton project
and Denniston’s U.S. visit
Driscoll assigned to crack
and exchange mission to England
German link to
introduction of new
and M section
and machine-driven approach to cryptanalysis
and MIT Group
and OP20G
and RAMs
Red Book as underlying
Japanese consulate (New York City), break-ins at
Japanese diplomatic codes/ciphers
See also JN-25; “Purple”
Japanese fleet codebook. See Red Book
Japanese naval codes/ciphers
alteration of
challenges of
and Coral
Driscoll’s work on
and exchange mission to England
and OP20G
JN-25 (Japanese naval code)
JN-37 (Japanese code)
JN-127 (Jade)
JNA-20 (Japanese code)
Johnson, Mary Lorraine
Justice Department, U.S., and Montgomery affair
Keen, H. H. (Doc)
Kern, Jack
Kettering, Charles F. “Boss,”
Kettering Bug
King, Ernest J.
Knepper, George W.
Knox, Dillwyn
Kriegsmarine
“Kurier” system (German)
Lange, Harold
Lawrence, Lieutenant (WAVES)
laws of letter di
stribution
Layton, Edwin T.
Lee, William J.
Liberty engines
Lockwood, Alvida
Long, Jimmie Lee
loops
Low, Francis S.
Lowden, Don
Luzon
M section
See also specific person
M-1 (automatic enciphering machine)
M-8 (Enigma analog machine)
M-9 (Enigma analog machine)
M4 Shark
McAuslun, “Goose”
McCook military base
McDonald, Gilman
Machine Gun
McInerney, James
McLaren, Janet Clark
Madame X machine (U.S. Army)
magnetic digital recording, Desch’s work on
Mahan, Lieutenant
Manhattan Project
Mann, James D.
Marianas campaign
Marks, Philip
Markworth, Friedrich
Massachusetts Institute of Technology (MIT)
Bush at
funding for
NCR link with
See also MIT Group
Meader, Bruce
Meader, Ralph
and brush problems
and civilian-military relations
and closing of Dayton project
Desch’s relationship with
and history of American Bombe project
and IBM machines
as manager of Dayton project
and manufacturing of Bombes
and Montgomery affair
and NCR-Navy relationship
and OP20G’s order to scratch Bombe design
personal background of
postwar activities of
professional background of
and resources for Dayton project
and secrecy of Dayton project
and testing in Dayton project
and Turing’s memo about Dayton visit
and V-J Day
and WAVES
and wheel size problems
and women
Menzel, Donald
Menzies, Stuart (aka “C”)
Meyer, May. See Driscoll, Agnes May
microfilm
Midway
military, U.S., modernization of
military-industrial complex
“milk cows.” See refuelers, U-boat
Mills, C. Wright
MIT Group
and Bush
and Dayton Project
and Desch
and Driscoll
and Japanese codes/ciphers
and M section
and old vs. new generation of codebreakers
and RAMs
and Safford
Montgomery, Billie (brother)
Montgomery, James Martin Jr.
arraignment/indictment of
arrest of
and British
confession of
death of
and draft
embezzlement charges against
espionage charges against
and FBI
interviews of
as inventor
in isolation
in jail
and Justice Department
letters to foreign governments of
mental status of
NCR work of
and ONI
personal life of
personality of
post-prison life of
and press
release of
relocation of
search of home of
