As the e-book was released throughout the war, to be able to guard the Polish airmen and their families remaining in occupied Poland from German reprisals, Fiedler employed pseudonyms for that airmen of 303 Squadron. This exercise was mandated in the memo concerning confidential facts issued via the Air Ministry https://divisi30393692.blogchaat.com/32006353/an-unbiased-view-of-divisi303