In late December 1915, Major Bornemann, commander of the 26th Division field artillery, wrote a report in which he described failures of communication, which led to an advantage created by the blowing of a mine being squandered by the artillery. Bornemann wrote that artillery battery observation posts had been left unmanned, on the assumption that they had been superseded by artillery liaison officers in the front line. Reporting had been inadequate due to complacency and reports should have been circulated to all headquarters rather than individual officers making assumptions that the information had been communicated. The gunners should avoid settling into routine firing, since prisoners had reported that its predictability made it easy to evade; limiting firing to the area in front of batteries should cease and oblique firing into adjacent sectors begin, to ensure that British artillery could not fire with impunity from the flanks. Concentrations of fire consumed too much ammunition on local targets and should be limited to conserve ammunition for firing on other targets, to disrupt British operations and to reassure German infantry that they would not be abandoned by the artillery.