Oh, mentioning Roger Hall’s book reminds me of the Editor’s Foreword:
“In editing this remarkable narrative by Roger Hall I was set the formidable task of cutting down his original manuscript to just over a third of its length. Nor was it an easy task, for there was so much good material that had to go by the board. Some of the author’s descriptions of aerial combat – which are among the most vivid I have ever read – had either to be pruned of completely omitted, but I have retained the full text of those I consider to be quite outstanding. In any event I feel a certain justification in taking this course, since the accounts I have omitted were largely of a technical or repetitive nature, of more interest to wartime pilots than to the general reading public.”
I was stunned when I read that

It occurred to me at the time to attempt to obtain the original manuscript and get it republished unedited.
P/O Roger Hall flew Spitfires with No. 152 Squadron during the Battle of Britain. He wrote of a 4 September scramble that I found to be of particular interest and relevant to my research:
“We were traveling at full throttle and climbing at nearly three thousand feet a minute in the general direction of the enemy formation, which was just visible high up above and in front of us. I could see Yellow Section in front and above us also, going at full boost. Black streams of petrol vapour were coming away from their engines. ‘Better use your energy boost, Roger,’ Ferdie called out to me, as he started to increase speed himself. The makers stipulated that the emergency boost must not be used for more than five consecutive minutes, but now the occasion seemed to warrant the risk. I throttled back, pushed the red half-lever forward and then opened up the main throttle again. Immediately the aircraft seemed to leap forward with a jolt, hitting me in the back as it did so, and the engine started to vibrate – black smoke pouring out of each exhaust port. The engine vibration transmitted itself to the entire aircraft and I began to appreciate the maker’s instructions.”
How much more material such as this did that silly editor chop out?