Along the centre of our line from Gueudecourt to the west of Le Sars similar considerations applied. As we were already well down the forward slopes of the ridge on his front, it was for the time being inadvisable to make any serious advance. Pending developments elsewhere all that was necessary or indeed desirable was to carry on local operations to improve our positions and to keep the enemy fully employed.
[Sidenote: Strong enemy positions in eastern flank.]
On our eastern flank, on the other hand, it was important to gain ground. Here the enemy still possessed a strong system of trenches covering the villages of Le Transloy and Beaulencourt and the town of Bapaume; but, although he was digging with feverish haste, he had not yet been able to create any very formidable defenses behind this line. In this direction, in fact, we had at last reached a stage at which a successful attack might reasonably be expected to yield much greater results than anything we had yet attained. The resistance of the troops opposed to us had seriously weakened in the course of our recent operations, and there was no reason to suppose that the effort required would not be within our powers.
[Sidenote: Necessity to gain spur and heights.]
The last completed system of defense, before Le Transloy, was flanked to the south by the enemy's positions at Sailly-Saillisel, and screened to the west by the spur lying between Le Transloy and Les Boeufs. A necessary preliminary, therefore, to an assault upon it was to secure the spur and the Sailly-Saillisel heights. Possession of the high ground at this latter village would at once give a far better command over the ground to the north and northwest, secure the flank of our operations toward Le Transloy, and deprive the enemy of observation over the allied communications in the Combles Valley. In view of the enemy's efforts to construct new systems of defense behind the Le Transloy spur, was extended and secured time in dealing with the situation.
Unfortunately, at this juncture, very unfavorable weather set in and continued with scarcely a break during the remainder of October and the early part of November. Poor visibility seriously interfered with the work of our artillery, and constant rain turned the mass of hastily dug trenches for which we were fighting into channels of deep mud. The country roads, broken by countless shell craters, that cross the deep stretch of ground we had lately won, rapidly became almost impassable, making the supply of food, stores, and ammunition a serious problem. These conditions multiplied the difficulties of attack to such an extent that it was found impossible to exploit the situation with the rapidity necessary to enable us to reap the full benefits of the advantages we had gained.