Air Commodore C. A. H. Longcroft, who flew in Major Burke's squadron on the attacking side, has kindly set down some of his memories of this time. The work of the Flying Corps, he says, was impeded by the enormous crowds which used to collect round the hangars. But the weather was good, and it was soon found that no considerable body of troops could move without being seen from the air. To avoid observation the troops moved on either side of the road, under the hedges. They even practised a primitive sort of camouflage, covering wagons and guns with branches of trees, which, while they were on the road, made them more conspicuous than ever. This first experience of moving warfare taught many lessons. The difficulty of communication between pilot and observer when the voice is drowned in the noise of the engine was met by devising a code of signals, and many of these signals continued in use throughout the war, after speaking-tubes had been fitted to machines. The selection of landing grounds when moving camp, the methods of parking aeroplanes in the open, and the means of providing a regular supply of fuel, were all studied and improved. In another way these manoeuvres, which were witnessed by General Foch, were a date in the progress of army aviation. No weapon, however good, can be of much use in the hands of those who have not learned to trust it. The progress of the aeroplane was so rapid that the education of commanding officers in its use became a thing of the first importance. Some of them, even when war broke out, had had but few opportunities of testing the powers of aeroplanes. After the manoeuvres No. 3 Squadron returned to Larkhill, to do battle all the winter with the old difficulties. The officers were accommodated at an inn called the 'Bustard', about two and a half miles to the west of the Larkhill sheds; the men were at Bulford camp, three miles to the east of the sheds. After a time the men were shifted to the cavalry school at Netheravon, which, though it was a little farther off, gave better quarters. Meantime a new aerodrome was being made, with sheds complete, at Netheravon, for the use of the squadron. The winter was passed in the old exercise of co-operation with the artillery and in new experiments. At Easter a 'fly past' of aeroplanes took place at a review of a territorial brigade on Perham Down. General Smith-Dorrien, who reviewed the troops, took the salute from the aeroplanes. There was a cross-wind, so that the symmetry of the spectacle was a little marred by the crab-like motion of the aeroplanes, which had to keep their noses some points into the wind to allow for drift.