The question of an expedition to the Shatt-el-Arab was first raised by the India Office. Such an undertaking could indeed hardly suggest itself during the first few weeks of the war, seeing that the Ottoman Empire did not become involved until some weeks had elapsed. The object of this Mesopotamia side-show, which ultimately developed into one of the greatest campaigns ever undertaken by a European Power in a region beyond the seas, was, to start with, simply the seizure of the water-way for the length that this is navigable by ocean-going ships together with the port of Basrah, and to secure the safety of the oil-fields of the Karun. The operation incidentally could hardly fail to exercise considerable political effect around the Persian Gulf, which was all to the good, and the project did not call for the employment of a large force to effect the purpose that was in view at the start. Most military authorities would surely class this as a thoroughly justifiable, if perhaps not an absolutely necessary, side-show. Then, thrusting itself into prominence about the same time as the Shatt-el-Arab affair developed, came the question of Egypt. The Turks would assuredly contrive a stroke at the Khedive's dominions from the side of the Isthmus of Suez sooner or later, the attitude of the tribes in the vast regions to the west of the Nile valley could not but give grounds for some anxiety, and there was a fair chance of effervescence within the Nile Delta itself. Maintaining the security of Egypt was hardly more a side-show than was the provision of garrisons for India; but the defence of Egypt at a later stage more or less merged into offensive operations directed against Palestine. The question of giving that defence a somewhat active form by undertaking expeditionary enterprises in the direction of the Gulf of Alexandretta came to be considered quite early in the war, as has already been mentioned in Chapter III. But during the first six months or so Egypt only in reality absorbed military resources which for various reasons could not appropriately have been utilized elsewhere. The British regulars were withdrawn from Cairo and Khartum and helped to form divisions for the Western Front, considerable bodies of Native Indian troops were transported to Suez from Bombay and Kurrachee, the East Lancashire Territorial Division was sent out from home, and the newly constituted contingents from the Antipodes secured a temporary resting-place in a region which climatically was particularly well suited for their purpose. Anxiety as to Egypt was as a matter of fact in great measure allayed in January 1915, owing to the Osmanlis pressing forward to the Suez Canal, sustaining a severe rebuff near its banks at the hands of the defending force, and disappearing eastwards as a beaten and disorganized rabble.