The arrangements for disembarking Birdwood's Australasians differed from those made at Helles, in that here the whole force was to land at one point, and that an attempt was to be made to effect a surprise just before dawn (April 25).
At the end of the day, although the whole of Birdwood's infantry had been ashore for several hours, the position which these troops had taken up remained a haphazard one, no depth had been secured, losses had been heavy, and the situation seemed so threatening that the question of a withdrawal was even considered at one time.
On the other hand, the Turks, who were commanded by Essad, had likewise dug themselves in, and they could bring an effective artillery fire to bear on the Anzac trenches from three sides, the prospect of the landing force making any effective progress under the awkward conditions of ground in which it found itself was remote, and Birdwood's contingents had in reality been even less successful than had those detailed for Helles as regards securing an adequate area on the enemy's shores before the defence gathered strength.
Two brigades of Birdwood's force were thereupon temporarily transferred to Helles by night, and on the 6th and following two days a mighty effort was made by the invaders to push forward in this southern area and to win the high ground that stretches across the peninsula about 5 m.
The water question caused no great difficulty at Helles, but the very limited local supply found within the contracted area occupied by Birdwood's force gave out almost entirely when the dry season set definitely in, and much of that which was brought by sea or condensed had to be conveyed up steep inclines to the trenches.
Birdwood's force had taken root since April were spurs of a tangled mountain mass known as Sari Bair, from the topmost ridges of which the Straits about the Narrows were partially visible at a distance of 4 or 5 miles.
The 13th Division, with some other detachments from Helles and with one brigade of the 10th Division, were the troops chosen to augment Birdwood's force already at Anzac. The new venture further north was entrusted to the i r th Division, which was to assemble in the island of Imbros supported by the rest of the 10th Division; the portions of this latter division not detailed for Anzac were to concentrate partly at Mudros, and partly in a port of Mitylene more than ioo m.
So dexterously had the assembling of the reinforcements within Birdwood's position been effected, that the Turks had entirely failed to detect how the numbers of their, opponents in this area had during the last few nights been nearly doubled.