I too loved "Chickenhawk" and intend to work my way through the list presented in this thread as time allows.
I have recently read "Ghost Force - The secret history of the SAS" by Ken Connor (ISBN 0-304-36367-7) and had to smile at his fond memory around page 199 of Major Greville Edgecombe ("Low-level Greville") of the army air corps and how he put himself in danger to save others.
Shades of modern day US EMS operators?
Also, and distinctly off thread, the paragraphs about Michael Bentine (ex goon) being a crack pistol shot, friend of the regiment and ex preuvian secret policeman will bring a wry smile to most who remember his humour.
Thanks to all of you who have suggested books that rotary newbies like me can get such inspiration from.
Ian.