On Fri, 24 Feb 2006 19:40:47 +0000, Pooh Bear
wrote:

Or in the worst case, compass headings and time of travel adjusted by wind
speed. The weather in Germany isn't always good enough for seeing the ground
from 30k feet.

Or indeed in the dark ! It's barely believable today that RAF navigators used
star sightings on early raids.

The RAF nighttime bombing campaign was a bit different, for one thing they
didn't pick a precision target, they just dropped on a whole city. Easy enough
to do in the dark that they got it right a whole lot more often than they got it
wrong.