[CHAPTER IV.]
TRAINING AND REORGANISATION—THE LABYRINTH.
The Division was now out of the line for the first time under General Harper’s command, and the latter lost no time in instructing officers and men in a form of attack which at the time was employed by no other Division.
Past experience, emphasised by the battle of Loos, had made it evident that to hold captured ground against the inevitable counter-attack, the attackers have not only to compete with the enemy actually manning the assaulted trenches. They must, in addition, dispose themselves at the end of the advance in a manner which enables them to resist the counter-attacks which will inevitably be delivered by the enemy’s reserves. In the past, the objectives of the attack had not been sufficiently clearly defined, with the result that the forward movement frequently came to an end with some bodies of troops far in advance of others, and all in a state of disorganisation. The foremost troops were thus left exposed, holding insufficiently consolidated salients, and disposed in a manner which prevented command being adequately exercised over them. The result was that the enemy was able to employ his fresh reserves against the tired and disorganised troops holding these salients. His counter-attacks, organised so as to be delivered both frontally and from the flanks, were in consequence frequently successful.
It thus followed that Divisions which in the early phases of an attack had carried out a brilliant advance, were subsequently in the later stages often overwhelmed and severely cut up.
It had, further, been the custom in the past for the same body of troops to be ordered to fight its way through a succession of trench lines or defended localities. Thus, as the action progressed, the attack became weaker and more disorganised through casualties, and so increasingly lost its driving power. At the same time, when the forward movement came to a standstill, no organised bodies of troops were left suitably disposed to hold the ground gained.
The plan of attack adopted by the 51st Division was designed to eradicate both these sources of failure. It was realised that if counter-attacks were to be defeated, the advance must be made in a series of clearly-defined bounds. Each bound was to be made good before the operations for the capture of the next began.
Further, the idea was to employ a fresh body of troops for each bound. Thus, when the troops detailed for a particular bound had reached their objective, they remained on it, and disposed themselves in the most suitable manner to hold the ground they had gained against counter-attacks. A fresh body of troops then passed through them and made good the next bound, consolidating in their turn the ground gained.
This form of attack became the sealed pattern for all attacks carried out by the Highland Division, and was largely responsible for the many outstanding successes of the Division.
Gradually as the war progressed and the Division achieved one success after another, its value became apparent, and it eventually became the stereotyped form of attack in the majority of the Divisions in France.
During this period, apart from the training of units under their own commanders, Divisional schools of instruction were formed to give individual training to officers and N.C.O.’s. A Divisional grenade school was formed, at which 13 officers and 260 other ranks were put through a course every week. At this course instruction was given in the Mills bomb, which had now replaced the former types of improvised bomb.