Operation "Dynamo", the evacuation of the British Expeditionary Force from France, heavily tasked the RAF. For a solid week, they maintained constant air cover over the port of Dunkirk while some 338,000 British, Belgian, and French soldiers were evacuated. Dynamo was possible only because the German Army was halted and ordered to turn and finish off the French while the Luftwaffe crushed the British evacuation. In the hotly contested skies over Dunkirk, RAF fighters put up stiff resistance, taking on as many bombers and fighters as they could. No. 92 Squadron, now led by Bob Stanford Tuck, who had added three more kills to his score since the 23rd of May, and more importantly, had changed his squadron's formation doctrine, participated in several Dunkirk missions. On the second of June they attacked an escorted formation of Heinkel 111 bombers. In this fight Tuck shot down a Heinkel and a Bf 109.
