Thornton also had the 101st Light Anti-Aircraft and Anti-Tank Regiment (less Bofors guns) and three companies of the 4th Border from Beauforce from 24 May. An advanced party of the Bays from the 2nd Armoured Brigade moved forward during the night to Araines, 4 miles from the Somme at Longpré and lost two tanks to mines trying to capture the bridge, then found that all the bridges and the road along the south bank had been mined, blocked and guarded.