2 July, troops from the 12th Reserve Division, elements of the 185th, 12th, 10th Bavarian and 3rd Guard divisions and IR 163 of the 17th Reserve Division had joined the defence; the 183rd Division was en route to the Somme front.) Night reinforcement At dawn, the 6th Company of RIR 122 arrived in Quadrangle Support, after a fraught night march. Köstlin had received the order in the afternoon of 9 July and took the company back to Martinpuich for supplies and ammunition but the field kitchen draught horse bolted from a shell with the field kitchen. Ammunition took until after midnight to issue and then the company moved forward, with two machine-guns. Two guides had been sent back from the III Battalion but it was so dark that Köstlin went cross-country on a compass bearing. The column lost cohesion in the dark between Martinpuich and Bazentin because of the number of shell-holes and trenches to traverse and the halts to form up took too much time. Köstlin formed the company into columns of sections after passing over the second position and the advance quickened. The ground was under shellfire and casualties began to increase. Köstlin decided to avoid Mametz Wood and move in the open between the wood and Comtalmaison on the line of the (Grand Duke Trench, Pearl Alley to the British) to Quadrangle Trench and then to the wood from Quadrangle Support. As they crossed the Contalmaison–Bazentin road at as dawn was breaking, Köstlin sent the guides forward who took twenty minutes to get back and report that the trench was straight ahead. As the company advanced, a machine-gun opened fire from the right and caused much confusion. Köstlin shouted "Double march, into the trench in front" but it was another further on and only thirty men followed him, the rest retreating in confusion to the second position or taking cover. 10 July Lambert and the battalion commanders of the 69th Brigade reconnoitred the ground and arranged support from the artillery of the 23rd and 34th divisions. Two battalions assembled along Horseshoe Trench, in a line long, facing Contalmaison away to the east. Two companies were sent forward to Bailiff Wood, to make a flank attack on the north-west end of the village. After a thirty-minute bombardment from the artillery firing from the south increased the rate of fire as the infantry closed on the village; a creeping