The plane was a Lancaster, LL678, fondly known as the Lily Mars. The crew were Canadian, Australian and British and three of them survived the attack from a nightfighter following an attack on Gelsenkirchen in Germany.
Below: The Lily Mars and crew:
Australian, Pilot Officer Dellie Delacour who died when the plane crashed over Holland:
In later years, Gerry Martin (middle) meets up with the German pilot (left) and radio operator (right) of the nightfighter which shot the Lily Mars down:
WW2 diary link for a full update on this poignant story.