Colossus 10 WWII

Date: 01-06-1941/30-06-1945 Reference: HW 25/5 Creator: Records created or inherited by Government Communications Headquarters (GCHQ) Catalogue context: Account of the methods used for breaking German teleprinter cypher messages Categories: Second World War Subjects: Communications; Intelligence Topics: Arts and culture; Military and war Period: Second World War Copyright information: Copyright clearance for publication is not required, except in the case of documents in third-party copyright. Usage terms: https://www.nationalarchives.gov.uk/documents/information-management/use-of-tna-materials.pdf