Quote:
Originally Posted by JG5_emil
I have a map which covers England, France and Germany but it is a 1939 one. I believe it is original and was used by bomber navigators. There are routes marked on it including flak batteries and DR what ever that means.
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Hello!
In this context "DR" means probably "Dead Reckoning", which means branch which have to be flown only with the guidance of the compass and the (gyroscopic) heading indicator, without relying on ground clues or navaids (which were non existent on the way to the target!).
This was on this kind of flying you really appreciated a competent navigator...Dead Reckoning skills have a tendency to become scarce in the western part of the world, due to abundance of navaids but in large land masses like Australia, Africa or South America, and the north and south poles, this is the only way to get home if your GPS is letting you down...
JV