, Commander-in-Chief of the British Expeditionary Forceon the Western Front, was not eager to carry out any offensives, until the assault on the Hindenburg Line, influenced by mounting British losses from previous battles that year, over since March, them in the past six weeks. Rawlinson was kept reined in and advised by Haig to ensure his men were well rested for the eventual attack on the Line. When news arrived of the British Third Army's victory at the Battle of Havrincourt, Haig's mind was changed. On the day following the success at Havrincourt, 13 September, Haig approved Rawlinson's plan to clear German outpost positions on the high ground before the Hindenburg Line and preparations began.
Battle
Very few tanks could be provided for the attack, so artillery would have to be relied upon to prepare the way but in the interests of surprise they would not be able to provide a preliminary bombardment. The would instead fire concentration shots at zero hour and support the infantry with a creeping barrage and were also made available. All three corps of the Fourth Army were to take part, with V Corps of the Third Army on their left flank and on their right the French First Army. The objective consisted of a fortified zone roughly deep and long, supported by subsidiary trenches and strong points. The German 2nd Army and 18th Army defended the area. On 18 September at 5.20 am, the attack opened and the troops advanced. The promised French assistance did not arrive, resulting in limited success for IX Corps on that flank. On the left flank, III Corps also found difficulty when attacking the fortifications erected at "the Knoll", Quennemont and Guillemont farms, which were held determinedly by German troops, the village was however captured by the British 12th Eastern Division. In the centre, General John Monash's two Australian divisions achieved complete and dramatic success. The 1st Australian Division and the 4th Australian Division, had a strength of some and in the course of the day captured and thirty trench mortars. They took all their objectives and advanced to a distance of about on a front. The Australian casualties were and men The attack closed as an Allied victory, with and captured. However, during the battle, all but one member of "D" Company of the 1st Australian Battalion refused to take part in an attack to help a neighbouring British unit. The protest was against the battalion being sent back into combat when it had been about to be relieved. On 21 September 119 members of the company were subsequently imprisoned for desertion; this was the AIF's largest incidence of "combat refusal" during the war and formed part of a general weakening in the force's discipline due to the stresses of prolonged combat. The charges of desertion in the face of the enemy were reduced to the lesser crime of being AWOL. All bar one soldier had their charges dropped after the armistice in November.
Aftermath
Although Épehy was not a massive success, it signalled an unmistakable message that the Germans were weakening and it encouraged the Allies to take further action with the Battle of St. Quentin Canal, before the Germans could consolidate their positions. The failure of the III Corps to take their last objective – the outpost villages, would mean that the American forces would face a difficult task due to a hurried attack prior to the battle. The Deelish Valley Cemetery holds the grave sites of around from the 12th Division who died during this battle, the nearby cemetery of Épehy Wood Farm Cemetery also holds the graves of men who died in this battle and the previous battles around this area.
