On 31 August, the Brigade joined up with 11th Armoured Division on the Somme at Amiens and next morning the Brigade crossed on a narrow bridge to the west of Amiens and continued the advance on the left of the 11th Armoured Division. By evening, the 13/18 H were through Doullens, where a rearguard action had been fought at the crossing of the river Authie. The 4/7 DG had experienced some fighting at Vignacourt and Canapples on the left but, by evening, they too were up to the Authie.