About Room 40

Room 40, also known as 40 O.B., was the cryptanalysis section of the British Admiralty during the First World War.

members

here now

Facts from Wikidata (CC0). Image by D. Cunego via Wikimedia Commons (Public domain).

Room 40

cryptanalysis department

0members1here now

Sort by

Content type

Sort by

Content type

Nothing published yet

The conversation starts anyway — post the first discussion above.

Room 40, also known as 40 O.B., was the cryptanalysis section of the British Admiralty during the First World War.

members

here now

Facts from Wikidata (CC0). Image by D. Cunego via Wikimedia Commons (Public domain).

Be the first in the room — members see you arrive.