Bodyguard of Lies is a 1975 non-fiction book written by Anthony Cave Brown, his first major historical work. Named for a wartime quote of Winston Churchill, it is a narrative account of Allied military deception operations during the Second World War. The British and American governments resisted Brown's attempts to research the book. Many of the topics were still classified and he was denied access to British war records. The material in the book is predominantly based on oral testimony as well as some American records, declassified toward the end of Brown's research. Critical reception has been mixed, but generally negative. Contemporary historians, such as Charles B. MacDonald, praised the work – although some did comment on its length. Modern reviewers have identified inconsistencies or errors in the material, based on later declassified records. Also, some of Brown's personal conclusions have been questioned. Source: Wikipedia (en)