The division's 2nd Armoured Brigade and Beauforce got within four miles of the Somme by 01.00 on 24 May, but then began to meet opposition and mines. Attempts by 1st Armoured and 51st (Highland) Division under French command to break through to the encircled BEF at Dunkirk led to fighting round Abbeville on 27–28 May and were unsuccessful. By early June the BEF had been evacuated, but fighting continued. On 4 June 1 Sp Gp provided flank protection for another attempt by 51st (H) Division to destroy the German bridgeheads at Abbeville, but the Germans had had two weeks to dig in, and the attack failed. Next day the Germans renewed their offensive, surrounding and capturing 51st (H) Division at St Valery-en-Caux, while 1st Sp Gp was 'out on a limb' facing German Panzer divisions and was driven back across the Seine. An operation to evacuate the considerable numbers of British forces left in France from the western ports (Operation Aerial) began. The survivors of 1st Sp Gp were shipped out of Cherbourg on 16 June.