One of the earliest steps taken in organising the Grand Fleet after the declaration of War was to lay down definitely the various cruising orders for the Battle Fleet and its “look-out” screen of battle-cruisers, cruisers and light cruisers. There had been much discussion for some years before the War as to the best disposition of cruisers ahead of a Battle Fleet. None of the arrangements that had been under discussion was adopted as a whole, but war experience led to a series of diagrams being drawn up giving the cruising stations of all the various classes of cruisers and other light craft under the different conditions that might exist. These included diagrams showing the cruiser disposition with the fleet moving towards enemy waters, under conditions of ordinary visibility, by day, or in low visibility by day, both with the Battle Cruiser Fleet in company and without it; a similar diagram when moving away from enemy water by day (this being to meet the possible case of an attempted attack by destroyers as the fleet steered away from enemy waters); diagrams were got out for steering towards or away from enemy waters at night; and, finally, diagrams were prepared, both for day and night, for the dispositions of the cruisers and other light forces after an action. Several different cruising diagrams for the Battle Fleet itself, both by day and at night, were similarly drawn up. Some of these were specially designed to give such safety from submarine attack as was possible to the main body of the Fleet, in the not unlikely event of destroyers being absent, from bad weather, shortage of fuel, or other causes. The dispositions for use at night provided for the use of destroyer attack, and were designed to give safety from collision, due to squadrons inadvertently closing each other in the darkness, when showing no lights; this was a very possible event during the course of a long night when a very slight error in steering, or a slight difference in compasses, will rapidly bring two squadrons together that started the night five miles apart. It was necessary to keep squadrons separated, as a long line of ships greatly facilitated successful submarine attack, whilst a slight dispersal of squadrons gave greater freedom of movement in the case of destroyer attack. At the same time it was necessary to provide for concentrating the Fleet quickly at daylight. The question of submarine screens was taken up at the commencement of war. This matter had naturally been considered before the War, but was in its earliest stages, and, although an efficient disposition of a screen of destroyers is a comparatively simple matter when there is no lack of destroyers, the case is different when a fleet is very short of the requisite number, as was our experience, and one destroyer had often to be disposed to endeavour to do the work of two.