 Then, as the commander of the destroyer HMS "Vivacious", he made five trips to assist Operation Dynamo, the evacuation of Dunkirk.On 26 May the ship was allocated to Dynamo.At first, deployed from Dover, on 27 May the ship patrolled the beaches off Dunkirk, providing general anti-aircraft cover and protecting against fast E-boat attacks while scores of vessels crossed the mercifully semi-calm Channel in evacuation.