Enigma Machine
Rejoins GC&CS as head of the German Naval subsection, whose principal cipher challenge is Naval Enigma.
Role range: 1939-1945
Historical biography archive · Updated 2026-11-03
Frank Birch Biography and Timeline
Follow Frank Birch through 3 dated historical records for Great Britain.
Frank Birch, historical timeline
A chronological timeline drawn from matching World History Database records.
3Distinct records
1 of 1Page
1939–1942Years on this page
1939
1941
Enigma Machine
Becomes head of the GC&CS Naval Section as Naval Enigma assumes growing importance in the Atlantic.
Role range: 1939-1945
1942
Enigma Machine
Travels to Washington and helps negotiate full collaboration with the U.S. Navy on communications intelligence.
Role range: 1939-1945
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.