They filled in shell-holes and levelled the ground for aerodromes, they ran up hangars and excavated dug-outs—whither they retired in a strong, silent rush (the expression is theirs), when the apprehensive Boche attempted to curtail their activity with bombs.

And by degrees the right machines came along. The Navy-that-Flies swung itself into them critically, flung them about in the air three miles high, testing and measuring their capabilities. Then they fought them, crashed them, improved on them till they were righter still, and finally proceeded (to quote another of their expressions) to “put the wind up Old Man Boche” in a way that helped the Navy-that-Floats enormously.

But apart from spotting duties, which were necessarily intermittent, the R.N.A.S. undertook a photographic reconnaissance of the entire Belgian coast from Nieuport to the Dutch frontier. The work in progress at Ostend and Zeebrugge, the activities of submarines and destroyers inside the basins; locks, quays, and gun-emplacements, and the results of bombs dropped thereon the night before, were all faithfully recorded by these aerial cameras. The negatives were developed and printed, the resultant bird-pictures enlarged, studied through stereoscopic lenses, and finally given to the monitors “for information and guidance.” Since it is not given to everyone to recognise the entrance to a dug-out or a group of searchlights as they appear from a height of 20,000 feet, the photographs were embellished with explanatory notes for the benefit of anyone unaccustomed to such unfamiliar aspects of creation.

The Germans claim to be a modest people. They were as busy as beavers, and they resented these importunate photographers with all the fervour that springs from true modesty. Their anti-aircraft guns plastered the intruders with bursting shrapnel, and from every coast aerodrome Boche machines rose like a cloud of angry hornets to give battle. Yet day after day fresh plates find their way to the developing trays, and a comparison between the official reports of the flight—couched in a laconic terseness of phrase that is good to read—and the amazing results obtained gives perhaps the truest measure of the work performed by these very gallant gentlemen.

Not a spadeful of earth can be turned over, nor a trowel of cement added to a bastion along the coast, but a note appears a day or two later upon the long chart which adorns the record office of this particular squadron. A crumpled escorting machine may have come down out of the clouds, eddying like a withered leaf, to crash somewhere behind the German line; there may be somewhere near the shore a broken boy in goggles and leather lying amid the wreckage of his last flight. Such is the price paid for a few more dots added in red ink to a couple of feet of chart. But as long as the photographic machine returns with the camera intact, the price is paid ungrudgingly.

The work of these photographic recorders, pilot and observer alike, differs from all other forms of war flying. Their sole duty is to take photographs, not haphazard, but of a given objective. This necessitates steering a perfectly steady course regardless of all distractions such as bursting “Archies” and angry “Albatross” fighters. They leave the fighting to their escorts, and their fate to Providence. The observer, peering earthwards through his view-finder, steers the pilot by means of reins until he sights the line on which the desired series of photographs are to be taken: once over this, the pilot flies the machine on an undeviating course, and the observer proceeds to take photographs. When all the plates have been exposed, they turn round and return home with what remain of the escort. On occasions the escort have vanished, either earthwards or in savage pursuit of resentful though faint-hearted Boches; this is when the homing photographers’ moments are apt to become crowded with incident.

One such adventure deserves to be recorded. It happened about 12,000 feet above mother-earth: the official reports, typed in triplicate, covered some dozen lines; the actual events, an equal number of minutes; but the story is one that should live through eternity.

“While exposing six plates” (says the official report of this youthful Recording Angel) “observed five H.A.’s cruising.” (“H.A.” stands for Hostile Aeroplane.) “Not having seen escort since turning inland, pilot prepared to return. Enemy separated, one taking up position above tail and one ahead. The other three glided towards us on port side” (observe the Navy speaking), “firing as they came.

“The two diving machines fired over one hundred rounds, hitting pilot in shoulder.” As a matter of sober fact, the bullet entered his shoulder from above and behind, breaking his left collar bone, and emerged just above his heart, tearing a jagged rent down his breast. Both his feet, furthermore, pierced by bullets, but the observer was not concerned with petty detail.

“Observer held fire until H.A. diving on tail was within five yards.”