Originally Posted by
treadigraph
In the 1970 novel Bomber by Len Deighton he mentions aircrew's belief of blue master search lights and dismisses it as a misapprehension - I seem to recall the book was well researched and considered a highly accurate account of a raid on Germany.
It's a long time since I read the book but I remember "geodesic" being used to describe the fuselage construction of the Lancaster. That made me doubt the technical accuracy of everything else.