On 18 August, Infantry Regiment 125 of the 27th Division was surprised by an attack from the east end of Delville Wood, after its trenches were almost obliterated by British artillery. The British infantry arrived as soon as the barrage lifted and Grenadier Regiment 119 to the north, was almost rolled up from its left flank but two companies of III Battalion counter-attacked through I Battalion, which had lost too many men to participate. At the north-west side of the wood, Infantry Regiment 121 of the 26th Division found that the British artillery had made Orchard Trench almost untenable. II Battalion had to advance through the shell-fire and dig a new line behind Orchard Trench, to maintain touch with the flanks, before being relieved by I Battalion overnight. The trench was occupied by Infantry Regiment 104 of the 40th Division, from North Street to the west and by Infantry Regiment 121 north of Longueval, which repulsed an attack on 21 August.