The object of the Anzac landing was to detain the Turkish forces on Kilid Bahr plateau, to check the reinforcement of the southern Peninsula by them or by other troops from the Bulair district, and to threaten the Turkish line of retreat. The enemy’s forces in these central regions were vaguely estimated at about 20,000; but reconnaissance had been impossible, the country was unknown, except in so far as it can be surveyed from the sea, and hitherto the Staff had no maps even fairly trustworthy, as the maps afterwards found on the bodies of Turkish officers were. The landing was officially called Z Beach, but was always known as “Anzac,” and so history will know it. As already stated, the covering force consisted of the 3rd Australian Brigade under Colonel Sinclair Maclagan. It was conveyed in four transports, but the first landing-party (about 1500 men) had been transferred at Mudros to the warships _Queen_ (Admiral Thursby’s flagship), the _London_, and the _Prince of Wales_. Twelve tows were provided, each consisting of a steam pinnace and a trail of four cutters or “lifeboats,” and carrying about 125 men.[92] As soon as the first party had started in the tows, the remainder of the covering party was to tranship from the transports into eight destroyers, and to follow slowly towards shore until taken off by the returning tows, three tows being allotted to each pair of destroyers. When the covering brigade had made sure of the landing, the transports of the whole army corps were to close in to shore and disembark. The _Triumph_, the _Majestic_, and the cruiser _Bacchante_ were to cover the landing by gun-fire. As throughout the expedition, the entire organisation on the water was directed by the navy, and the boats were commanded by boy midshipmen, whose imperturbable calm in moments of extreme peril was, from beginning to end, and at every crisis, only rivalled by the dogged heroism of their crews. [Illustration: POSITION AT ANZAC IN THE WEEKS FOLLOWING LANDING]