This week on History Happy Hour: Bertram Ramsay should be a household name. He is the British admiral who masterminded two of the most amazing naval operations of World War II: OPERATION DYNAMO, the evacuation of Dunkirk, and OPERATION NEPTUNE, the D-Day landings at Normandy. But today he is largely forgotten. Host historians Chris Anderson and Rick Beyer will discuss his extraordinary contributions to the Allied effort in World War II with Brian Izzard, author of "Mastermind of Dunkirk and D-Day." By 1939 Ramsay had been forcibly retired, his career seemingly over - but in an unlikely twist, he became indispensable once the war broke out. The mastermind of Dunkirk and D-Day, Sunday at 4 PM on History Happy Hour – the spot where history is always on tap.