Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Butt report?
Summarize this article for a 10 year old
At the start of the war, Bomber Command had no real means of determining the success of its operations. Crews would return with only their word as to the amount of damage caused or even if they had bombed the target. The Air Ministry demanded that a method of verifying these claims be developed and by 1941 cameras mounted under bombers, triggered by the bomb release, were being fitted.
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