Arriving at Ypres 151st brigade was almost immediately forced back, and the retreat to the Dunkirk perimeter began. By 30 May the brigade was entrenched between the Bergues and Ringsloot canals and reinforced by some remnants from 70th Brigade, after repulsing German attacks on the 31st, the brigade embarked for Britain from the Dunkirk mole late on 1 June.