Original sentence: The display is based on a sortie captained by Flying Officer "Cherry" Carter to Berlin on "Black Thursday" 1943, so called because Bomber Command lost 50 of the 500 bombers detailed for the raid
Edited sentence: The display is based on a sortie captained by Flying Officer "Cherry" Carter to Berlin on "Black Thursday" December 1943, so called because Bomber Command lost 50 of the 500 bombers detailed for the raid - more than half were lost in landing accidents due to bad weather