Twenty years ago tonight the Allied armada of ships, planes, and men set off to invade Europe. D-Day was about to unfold.
Richard Dimbleby looks back to June 5, 1944, and Britain's part in the greatest military operation of modern times with Field-Marshal Viscount Montgomery of Alamein, K.G., A. J. P Taylor, Correlli Barnett, Alun Gwynne-Jones and soldiers, sailors, airmen, resistance men, and secret agents of the Allied Forces.