Sheldon also wrote that Allied aerial dominance in August put the Germans at a serious tactical disadvantage, that some troops began to avoid the remaining dugouts and that much of the Allied artillery was used constantly to bombard targets deep behind German lines. Harris wrote that on the German side, conditions were worse and the British improved the accuracy of their artillery-fire, with the help of aircraft observation. At the end of August, Falkenhayn was dismissed, partly due to disagreements over his conduct of the defence of the Somme. Prior and Wilson analysed the British on the Somme from which included the fighting for High Wood. After sixty days, thirty-two British divisions had been engaged and lost The British were bogged down, having advanced on a front.