They were also invariably carried out under the protection of a smoke screen; in the autumn of 1917 the enemy commenced to start a smoke screen himself as soon as we opened fire, thus interfering with our observation of fire even from aircraft, but in spite of this much damage resulted from the bombardments. Our observation of fire being necessarily carried out by aircraft, and the enemy attempting similar measures in his return gunfire, resulted in aerial combats over the monitors being a frequent occurrence. The carefully organized arrangements made by Admiral Bacon for these coastal bombardments excited my warm admiration. He left nothing to chance, and everything that ingenuity could devise and patient preparation could assist was done to ensure success. He received assistance from a staff which, though small in number, was imbued with his own spirit, and he brought to great perfection and achieved wonderful success in methods of warfare of which the Navy had had no previous experience. During the year 1917 aerial bombing attacks were persistently carried out on the German naval bases in Belgium by the Royal Naval Air Force at Dunkirk, which came within the sphere of the Dover Command. These attacks had as their main object the destruction of enemy vessels lying in these bases, and of the means for their maintenance and repair. The attacks, under the very skilful direction of Captain Lambe, R.N., were as incessant as our resources and the weather admitted, and our gallant and splendidly efficient airmen of the R.N.A.S. were veritable thorns in the sides of the Germans. Our bombing machines as well as our fighting aircraft were often required to attack military instead of naval objectives, and several squadrons of our fighting machines were lent to the military for the operations carried out during the year on the Western Front; they did most excellent work, and earned the high commendation of Sir Douglas Haig (now Earl Haig). But we were still able to work against naval objectives. Zeebrugge, for instance, was bombed on seven nights during April and five nights during May, and during September a total weight of 86 tons of bombs was dropped on enemy objectives by the Dunkirk Naval aircraft, and we had good reason to be satisfied with the results achieved. During this same month 18 enemy aircraft were destroyed and 43 driven down. Attacks upon enemy aerodromes were very frequent, and this form of aerial offensive undoubtedly exercised a very deterrent influence upon enemy aerial activity over England. Two submarines also were attacked and were thought to be destroyed, all by our machines from Dunkirk. To Commodore Godfrey Paine, the Fifth Sea Lord at the Admiralty, who was in charge of the R.N.A.S., and to the staff assisting him our thanks were due for the great work they accomplished in developing new and efficient types of machines and in overcoming so far as was possible the difficulties of supply.