The Germans in the wood also suffered greatly in the hand-to-hand fighting. III Battalion, Infantry Regiment 165 of the 7th Division and part of I Battalion, Infantry Regiment 62 of the 12th Division, were reinforced from the Switch Line by I Battalion, Infantry Regiment 91, early on 23 July. British gunners had difficulty supporting attacks on High Wood, because they had to fire over Bazentin Ridge. The low elevation of the guns meant that shells skimmed the British trenches, the margin for error was small and numerous complaints were made that British infantry casualties were caused by the British artillery. Worn guns, defective ammunition and inaccurate information about the location of British infantry positions were blamed for short-shooting. The 51st Division pushed saps forward on 2 August, towards the Switch Line and dug a new trench near Wood Lane to the east of High Wood.