I entertain no kind of doubt that it was only because of the creation of this Australian Mission to the Americans, and of Maclagan's tact, industry and judgment in controlling it, that the combined action of the two Corps in the great battle of the closing days of September proved as successful as it did. Under no other conditions would it have been possible to bring about any reasonable degree of co-operation between two forces whose war experiences, outlook, attitude towards their problems, training and temperament were so fundamentally different.
It is not necessary to indulge in either a panegyric or a condemnation of these American Divisions. Neither would be deserved or appropriate. They showed a fine spirit, a keen desire to learn, magnificent individual bravery, and splendid comradeship. But they were lacking in war experience, in training, and in knowledge of technique. They had not yet learned the virtues of unquestioning obedience, of punctuality, of quick initiative, of anticipating the next action. They were, many of them, unfamiliar with the weapons and instruments of fighting, with the numerous kinds of explosive materials, or with the routine of preparing and promulgating clear orders. They seriously underrated the necessity for a well-organized system of supply, particularly of food and water, to the battle troops. They hardly, as yet, appreciated the tactical expedients available for reducing losses in battle.
Yet all these shortcomings were the results only of inexperience, and it is perhaps unfair to contrast them with the Australian troops who had seen front-line service in France for two and a half years continuously, and whose leaders, high and low, had served a long and graduated apprenticeship in every branch of their duties.
The Australian Mission assisted greatly to minimize these difficulties. Although its members were vested with no executive powers, their advice and help were eagerly sought, and zealously adopted. In many ways, large and small, their assistance must have proved invaluable. How to interpret orders from above and how to issue them to those below, how to draw stores and how to distribute them, how to organize the signal service and how to ensure a flow of information—these ranked among the greater matters. In quite small things also, help was needed, such as the way to detonate mortar bombs, to equip the infantryman for battle, to organize and use the messenger (i.e., runner) service, and to keep battle stations clear of people who had no urgent business there.
It is not, of course, intended to convey that all these defects were present in every regiment. Some, however, were met with, by the officers of the Australian Mission, in all of them.
It greatly added to the burden cast upon the American Divisions that they were called upon to fight almost as soon as they had taken up duty in the line. The necessity for this was really a legacy from the Third Corps, whom they had relieved, and it is essential for an understanding of the course of events during these days to narrate them in proper chronological order.
I have explained that as the result of the battle of Hargicourt, the Australian Corps had succeeded in mastering the whole of the Hindenburg outpost line opposite its front, as far as a point a little north of and opposite to Bellicourt. The advance of the Third Corps, however, had failed to reach the same line, and had stopped short of it by an average distance of nearly a thousand yards. On my pointing out that the front I had taken over did not comply with the stipulations which I had made in my battle plan,[21] the Army Commander decided that prior to the main attack, the northern of the two American Divisions should make good this shortage, by an attack aiming at the capture of the remainder of the Hindenburg outpost line opposite the tunnel sector.
I must now anticipate an explanation of the main outlines of the plan which I had prepared for the great battle, by a brief reference to the situation and disposition of troops on September 25th. The two American Divisions were respectively the 30th, commanded by Major-General Lewis, on the right or south, and the 27th, commanded by Major-General O'Ryan, on the left or north, each lying on a frontage of three thousand yards. These two Divisions comprised, in all, eight regiments, each of three battalions. I had instructed each of them to place one regiment in the line, and to keep the remaining three, i.e., six in all, in reserve, for the main operation.