To await the result of the operation of the next day would have allowed insufficient time to complete the necessary maps and to distribute them before nightfall on September 28th. There was no option but to assume that General O'Ryan (27th American Division) would succeed in capturing the northern section of the outpost line still in enemy hands, and upon that assumption to fix the Artillery "start line" as falling to the east of that objective. For the first time I had to gamble on a chance. It was contrary to the policy which had governed all my previous battle plans, in which nothing had been left to chance.
At 5.30 a.m. next morning the 27th American Division carried out the attack, under a barrage, and assisted by Tanks. The principal objective points in the trench system under attack were Quennemont Farm and Gillemont Farm. Every trace of these once prosperous homesteads and plantations had, of course, long since disappeared. The names alone remained as memories of the fighting there of 1917.
What happened on that day will never be accurately known. For once, the information from the air did not harmonize with the claims made on behalf of the assaulting troops, perhaps because the troops, being untrained in the use of flares, or having been left unsupplied with them, failed to assist the aeroplanes in identifying their correct positions. However that may be, it became sufficiently clear, as the day proceeded, that no proper success for the operation could be claimed.
There remained no doubt that some enemy were still left in occupation of trenches on our side of the objective for that day, and such American troops as may have gained their objective could not therefore be reached. It appeared afterwards that small parties of Americans had reached the vicinity of their objectives and had very gallantly maintained themselves there, although surrounded on all sides, until relieved by the Australians on September 29th.
The non-success of this operation of September 27th appeared undoubtedly to be due to a failure to carry out "mopping up" duties satisfactorily. It considerably embarrassed the preparations for the main attack on the 29th. The knowledge that a number of American wounded were still lying out in front, and the suspicion that some of the American troops had succeeded in reaching Gillemont Farm, precluded any alteration of the Artillery plans for September 29th, even if there had still been time to do so without creating untold confusion. To have brought the Artillery start line, proposed for September 29th, back to the start line of September 27th would have brought our own barrage down upon these forward troops of ours.
I hastened to the Army Commander to put the position before him, stating that I felt grave concern for the success of the main operation, in view of the fact that my Artillery barrage would have to come down fully a thousand yards in front of what was still the front of the 27th Division. I suggested a postponement for a day to give this Division, which had ample resources in troops, another opportunity of retrieving the position. He explained, however, that it was now too late to alter the programme, because three whole Armies were committed to the date first appointed. He said that he was, under the circumstances, quite prepared for a partial failure at this point, and requested me to do my best to pursue the original plan, in spite of this difficult situation.
He agreed, however, to my further request, that additional Tanks, out of Army reserves, should be placed at my disposal, so that I might allot them to the 27th Division, to assist them in passing over the thousand yards which would bring them up level with the Artillery barrage. I hoped that this would enable the Division to catch up with the southern half of the battle line.
It was an unsatisfactory expedient, and gave no promise of certain success. It proved futile, and gravely affected the actual course, although not the ultimate success, of the battle still to come. It was the only occasion in the campaign on which I was compelled to accept preliminary arrangements which were not such as would absolutely guarantee success.
The genesis of the difficulty thus created had, however, been the failure of the Third Corps to complete their programme of September 18th. It had been confirmed by the subsequent failure of the 27th American Division to make up the deficiency on September 27th. I still think, as I then urged, that I should have been allowed to accept the situation as I found it on taking over this front on September 25th, and that the 27th Division should not have been called upon, at the eleventh hour, to endeavour to establish that new situation which had been originally assumed as the basis for the battle plan of September 29th. My original proposal of September 18th, in my letter of that date, paragraph 3 (see above), had, of course, been made before I could foresee that the Third Corps would fail to capture the start line contemplated in my first plan.
Of course, all is well that ends well. But, for an anxious and turbulent period of twenty-four hours on September 29th and 30th, the issue of the battle hung in grave doubt. The operation, although successful, did not proceed "according to plan" in its entirety, and it was due to the wonderful gallantry and skilful leading of the Third Australian Division that a very ugly situation was retrieved, a result to which the Fifth Australian Division also contributed in no small degree.