One caveat here. The book
No Queensbury Rules, about WE Fairbairn and EA Sykes' WWII SOE and OSS service quickly points out that the biggest problem the researchers encountered was the abundance of published, and widely accepted as fact, 'fabricated' histories of individuals' SOE/OSS experiences, training and operations, including Ian Flemings historical account of events. In fact, the editors repeated cautions that about the questionable validity of certain accounts that they included was annoying for me when I read the book.
I should add that the researchers also point out that many (read most) of the SOE files were reportedly destroyed immediately after 'closing shop' after the war.
https://cqbpublications.com/products...combat-1940-42