Vulnerable British convoys, escorted by those few ships the navy could spare, carried the evacuated troops homewards.
Hitler was poised to invade Britain, and every man on board them was vital to the final battle for national survival which was expected to begin at any moment.
In a better world that would have been the end of this story. Unfortunately, it was not.
Unable to launch aircraft to defend herself because her deck was packed with the RAF planes, Glorious was a sitting duck.
HMS Ardent made the first attempt and was blown out of the water.
But he could not. He knew that behind him lay the troopships, and he must make a final effort to protect them.
(They were recalled by the Acasta's sole survivor, Leading Seaman Carter).
When the crew of Acasta saw the explosion, a cheer went up throughout the ship.
The courage displayed in her final moments almost defies description. Her guns remained in action to the end; her torpedo crews kept firing until every one of them was dead