This latter trench, which contained twenty-five pair dry core cable, was completed by Lieutenant Hill with skilled cable jointers from 51 Air Line. Labour was made freely available by the Corps Staff, and as material now came forward rapidly, up to two thousand men a day were employed on these works. The forward portion of the scheme presented great difficulty, as the area was now so sown with batteries that it was almost impossible to trace the trenches so as to avoid battery positions and the shelling which they attracted. The greater part of the work could only be done by night because of enemy observation; and, further, time did not admit of the usual detailed preparation for the working parties. Nevertheless, all works were completed for the attack; and taking into account the continuous heavy shelling, with light casualties. The experiment made on the Somme of using a kite balloon to maintain communication with the front line, was now repeated; and as a separate balloon was now placed at the disposal of Second-Lieutenant Wilson and a visual signalling party, the result was satisfactory. Though all other preparations were well advanced, including the seclusion of the 1st Division in a “hush” camp on the coast, where they were specially rehearsed in landing operations from the sea, the attack was postponed from date to date, until it finally became evident by the transfer of a large proportion of the heavy batteries to the Ypres front, that the slow progress made there owing to weather and “pill-boxes” was likely to postpone the Nieuport offensive indefinitely. During the interval, the rival artilleries waged a furious and continuous duel. The forward buried system, unavoidably shallow from the nature of the ground, was continuously broken by shell fire. During September the cable trenches were blown up by direct hits on the average nearly twice a day. The repairs were most difficult and laborious owing both to the persistent shelling and the rise of the water level everywhere after the wet weather of August. Even with the sappers of three cable sections—B.F., B.E., and A.U. Imperial Cable Section,—and two area Signal Detachments from the Fourth Army, it became impossible to keep going satisfactorily the network of forty miles of trenches containing 1,200 miles of cable; and finally the assistance of the Corps Cyclist Battalion was obtained to dig diversion trenches in the worst shell areas, and a new trench in the Belgian area in substitution of the cable laid in the Nieuport Canal, the insulation of which began to fail soon after laying.