I have just finished reading a brilliant book called "Men of Air" which details the life of Bomber Command crews from early 1943 on.
To be a crew member on just one of those raids would have been daunting enough, but the courage required to do it night after night, knowing what was waiting for you; flak, night fighters, collisions and weather is something that just humbles me.
To those who served, my total respect and thanks.