A file of correspondence and memoranda dealing with the involvement of British naval attachés in espionage and diplomacy. Subjects discussed in this file include the role of a British naval attaché in the arrest and prosecution of a British agent in Sweden, leading to criticism of his behaviour by both the Foreign Office and the Secret Intelligence Service (MI6); the limiting of staff discussion between nations to designated attachés; the expenses of a naval intelligence officer in Callao; and a report by the British ambassador on talks in Ankara attended by General Sir Henry Wilson, in which subjects including the likelihood of an Italian surrender and the possibility of Turkish assistance for the allies were discussed.