Because the e book was released in the course of the war, so as to secure the Polish airmen and their family members remaining in occupied Poland from German reprisals, Fiedler applied pseudonyms with the airmen of 303 Squadron. This practice was mandated in a memo about confidential info issued https://divisi30326936.ageeksblog.com/31084838/the-fact-about-divisi303-that-no-one-is-suggesting