On Monday 27th May – the first full day of the evacuation – one cruiser, eight destroyers, and 26 other craft were active and Admiralty officers combed nearby boatyards seeking small craft that could ferry personnel from the beaches out to larger craft in the harbour.
In this same day the Luftwaffe heavily bombed Dunkirk, both the town and the dock installations. Water supplies were knocked out, the resulting fires could not be extinguished and an estimated thousand civilians were killed, one-third of the remaining population of the town.
In the air the Luftwaffe was met by 16 squadrons of the Royal Air Force, who claimed 38 kills on Monday 27th May while losing 14 of their own aircraft. Altogether, over 3,500 sorties were flown in support of Operation Dynamo.
The RAF continued to take a heavy toll on the German bombers throughout the week. Soldiers being bombed and strafed while awaiting transport were for the most part unaware of the efforts of the RAF to protect them, as most of the dogfights took place far from the beaches. As a result, many British soldiers bitterly accused the airmen of doing nothing to help.