It is hardly known to the general public—which seems a pity—that the Navy has, working on the Western Front, some Air Squadrons who fly only over the land and have not so much as seen the sea, except by chance or from a long distance, from year's end to year's end. They have carried into their shore-going lives a number of Navy ways, like the curt "Thank God" grace at the end of a meal, or the mustering of all hands for "Divisions" (Navalese for "Parade") in the morning, marking off the time by so many "bells," hoisting and lowering at sunrise and sunset the white ensign flown on a flagstaff on the 'drome; they stick to their Navy ratings of petty officers and sub-lieutenants and so on, and interlard their speech more or less with Navy lingo—a very useful and expressive one, by the way, in describing air manoeuvres—but otherwise carry out their patrols and air work with, and on about the same lines as, the R.F.C.

Naval Number Something is a "fighting scout" Squadron, which means that its sole occupation in life is to hunt for trouble, to find and fight, "sink, burn or destroy" Huns. At first thought it may seem to the Army which fights "on the floor" that this job of a fighting machine is one which need interest no one outside the Air Service, that it is airman fighting against airman, and that, except from a point of mere sporting interest, the results of these fights don't concern or affect the rest of the Army, that the war would roll on just the same for them whichever side had the upper hand in the air fighting. Those who think so are very far wrong, because it is on the fighters pure and simple that the air mastery depends. Air work is a business, a highly complicated, completely organised and efficient business, and one bit of it has to dovetail into another just as the Army's does. The machines which spot for our guns, and direct the shooting of our batteries to destroy enemy batteries which would otherwise destroy our trenches and our men in them; the reconnaissance machines which fly up and down Hunland all day and bring back reports of the movements of troops and trains and the concentration or removal of forces, and generally do work of which full and true value is known only to those Heads running the war; the photographing machines which bring back thousands of pictures of all sorts—the line knows a few, a very few, of these, and their officers study very attentively the trench photos before they go over the top in a raid or an attack, and so learn exactly how, why, and where they are to go; the bombing machines which blow up dumps of ammunition destined for the destruction of trenches and men, derail trains bringing up reinforcements or ammunition to the Hun firing line, knock about the 'dromes and the machines which otherwise would be gun-spotting, reconnoitring, and bombing over our lines—and perhaps some day one may tell just how many Gotha raids have been upset, and cancelled by our bomb-raids on a Hun 'drome—all these various working machines depend entirely for their existence and freedom to do their work on the success of the fighting machines. The working machines carry guns, and fight when they have to, but the single-seater fighting machines are out for fight all the time, out to destroy enemy fighters, or to put out of action any enemy working machine they can come across.

The struggle for the air mastery never ceases, and although it may never be absolute and complete, because the air is a big place to sweep quite clear and clean, the fact that scores of our machines spend all their flying hours anywhere over Hunland from the front lines to fifty miles and more behind them for every one Hun who flies over ours and, after a cruise of some minutes, races back again, is fairly good evidence of who holds the whip hand in the air.

All this introduction is necessary to explain properly the importance of the fighting squadrons' job, and why the winning of their fights is of such concern to every man in the Army, and to every man, woman, and child interested in any man in the Army. It also serves to explain why it was that three machines of Naval Number Something "leapt into the air" in a most tremendous hurry-skurry, the pilots finishing the buckling of their coats (one going without a coat indeed) and putting on goggles after they had risen, when the look-out at the Squadron telescope reported that there were four Hun two-seater machines circling round at about 10,000 or 12,000 feet and just far enough over our front lines to look suspiciously like being on a gun-spotting or "Art.-Ob." bit of business.

That such a performance should be taking place almost within sight of their own 'drome doorstep naturally annoyed the Navals, and led to the immediate and hurried steps which took the three machines and pilots who were first ready into the air in "two shakes of the jib-sheet." The three men were all veteran fighters, and their machines three of the Squadron's best, and if the four Huns had known their reputations and calibre it is doubtful if they would have dared to hang about and carry on with their work as they did. There was "Mel" Byrne, a big man with a D.S.C. and a Croix de Guerre ribbon on his breast, and a score of crashed Huns notched to his credit, flying his "Kangaroo"; "Rip" Winkle, who had once met and attacked, single-handed, seven Huns, shot down and crashed three hand-running and chased the others headlong as far over Hunland as his petrol would take him: he was in his "Minnenwerfer"; and the "next astern" was the "'Un-settler" flown by "Ten-franc" or "Frankie" Jones, a youngster of—well, officially, twenty, so called, not because he was in his baptism named Frank, but because of a bet he had made with another Naval Squadron as to which Squadron would "crash" the most Huns by a stated date. He was desperately keen to win his often-referred-to wager—so much so in fact that the other pilots chaffed him constantly on it and swore he would risk more to win his bet than he would to win a V.C.

The three wasted no time in the usual circling climb over the 'drome, but drove up full tilt and straight for the four dots in the sky. They climbed as they went, and since the Trichord type is rather famous for its climbing powers they made pretty good height as they went. "Mel," in the lead, was in a desperate hurry to interrupt the enemy's artillery-spotting work, so gave away the advantage of height and sacrificed the greater climb they could attain with a lesser speed to the urgent haste and need of getting in touch with the enemy. They were still a good couple of thousand feet below when they came to within half a mile of the Huns, and the "Kangaroo," with the others following close, tilted steeply up and began to show what a Trichord really could do if it were asked of her. They were gaining height so rapidly that the Huns evidently did not like it, and two of them turned out and drove over to a position above the Trichords. The three paid no attention to them, but climbed steeply, swinging in towards the other two machines which, since they still continued their circling, were probably continuing their "shoot" and signalling back to their guns. But the Trichords were too threatening to be left longer alone. The two turned and flew east, with the Trichords in hot pursuit, slanted round, and presently were joined by their friends. Then the four plunged on the three in an almost vertical dive. Because the fighting scout only shoots straight forward out of a fixed gun, its bows must be pointing straight at a target before it can fire, and the Huns' straight-down dive was meant to catch the Trichords at a disadvantage, since it was hardly to be expected they could stand on their tails to shoot straight up in the air. But this is almost what they did. All three, going "full out," turned their noses abruptly up and opened fire. The Huns turned their dive off into an upward "zoom" and a circling bank which allowed their observers to point their guns over and down at the Trichords, and fire a number of rounds.

But because it was now perfectly obvious that the Trichords had attained their first and most urgent object, the breaking-off of the Huns' "shoot" and spotting for their guns, they could now proceed to the next desirable part of the programme—the destruction of the four Huns by methods which would level up the fighting chances a little. The "Kangaroo" shot out eastward and began to climb steeply, Mel expecting that the other two would follow his tactics, get between the enemy and their lines, and climb to or above their height. But the "'Un-settler" was in trouble of some sort, and after firing a coloured light as a signal to the leader meaning "Out of action; am returning home," slid off west in a long glide with her engine shut off. Rip Winkle, on the "Minnenwerfer," followed the "Kangaroo" east a few hundred yards and began to climb. The four Huns at first tried to keep above the level of the two, but it was quickly evident that the Trichords were outclimbing them hand over fist, were going up in a most amazing lift, in "a spiral about as steep as a Tube stair." The Huns didn't like the look of things and suddenly turned for their lines, dropped their noses, and went off at full speed. The two Trichords cut slanting across to connect with them, and in half a minute were close enough to open fire. Two against four, they fought a fierce running fight for a minute or two. Then the "Kangaroo" swept in astern of a Hun, dived and zoomed up under him and poured in a point-blank burst of fire. Mel saw his bullets hailing into and splintering the woodwork of the underbody, was just in time to throttle down and check the "Kangaroo" as the Hun's tail flicked up and he went sweeping down in a spinning nose dive. But a hard-pressed pilot will sometimes adopt that manoeuvre deliberately to throw a pursuer out of position, and, knowing this, Mel followed him down to make sure he was finished, followed him watching the spin grow wilder and wilder, and finish in a splintering crash on the ground. Mel lifted the "Kangaroo" and drove off full pelt after the others. Two of the Huns had dived and were skimming the ground—they were well over Hunland by now—and the other one and the "Minnenwerfer" were wheeling and circling and darting in and out about each other exactly like two boxers sparring for an opening, their machine-guns rattling rapidly as either pilot or gunner got his sights on the target. Then when he was almost close enough to join in, Mel saw a spurt of flame and a gust of smoke lick out from the fuselage of the Hun. The machine lurched, recovered, and dipped over to dive down; the "Minnenwerfer" leaped in to give her the death-blow, and under the fresh hail of bullets the Hun plunged steeply, with smoke and flame pouring up from the machine's body. The wind drove the flames aft, and in two seconds she was enveloped in them, became a roaring bonfire, a live torch hurtling to the ground. The Trichords saw her observer scramble from his cockpit, balance an instant on the flaming body, throw his hands up and leap out into the empty air, and go twisting and whirling down to earth.

A Hun Archie shell screamed up past the hovering Trichords and burst over their heads, and others followed in quick succession as the two turned and began to climb in twisting and erratic curves designed to upset the gunners' aim. They worked east as they rose and were almost over the lines when Mel, in one of his circlings, caught sight of a big formation flying towards them from the west. He steadied his machine and took another long look, and in a moment saw they were Huns, counted them and found fourteen, most of them scouts, some of them two-seaters of a type that Mel knew as one commonly used by the Huns on the infrequent occasions they get a chance to do artillery-observing work on our lines. Both Mel and Rip worked out the situation on much the same lines, that the Huns had some important "shoot" on, were specially keen to do some observing for their guns, had sent the four two-seaters first and were following them up with other two-seater observing-machines protected by a strong escort of fighters. Mel looked round for any sight of a formation of ours that might be ready to interrupt the game, saw none, and selecting the correct coloured light, fired a signal to Rip saying, "I am going to attack." Rip, as a matter of fact, was so certain he would do so that he had already commenced to climb his machine to gain a favourable position. The fourteen were at some 17,000 feet, several thousand above the Trichords, but here the great climbing power of the Trichords stood to them, and they went up and up, in swift turn on turn that brought them almost to a level with the enemy before the Huns were within shooting distance. They came on with the scouts flying in a wedge-shaped formation, and the observing-machines protected and covered inside the wedge.

The odds were so hugely in their favour that it was clear they never dreamed the two would attack their fourteen, and they drove straight forward to cross above the lines. But the Trichords wakened them quickly and rudely. Each wheeled out wide and clear of the formation, closed in astern of it to either side, lifted sharply to pick up an extra bit of useful height, dived, and came hurtling, engines going full out and guns shooting their hardest, arrow-straight at the two-seaters in the centre of the formation below them. Owing to the direction of their attack, only the observers' guns on the two-seaters had any chance to bring an effective fire to bear. It is true that the few scouts in the rear of the wedge did fire a few scattering shots. But scouts, you will remember, having only fixed guns shooting forward, can only fire dead ahead in the direction the machine is travelling, must aim the machine to hit with the gun. This means that the target presented to them of the Trichords flashing down across their bows made it almost impossible for them to keep a Trichord in their sights for more than an instant, if indeed they were quick enough to get an aim at all. Their fire went wide and harmless. The two-seaters did better, and both Trichords had jets of flaming and smoking tracer bullets spitting past them as they came, had several hits through their wings. But they, because they held their machines steady and plunged down straight as bullets themselves on to their marks, were able to keep longer, steadier and better aim. Mel, as he drove down close to his target, saw the gaping rents his bullets were slashing in the fuselage near the observer, saw in the flashing instant as he turned and hoicked up and away, the observer collapse and fall forward with his hands hanging over the edge of his cockpit. Rip saw no visible signs of his bullets, but saw the visible result a moment after he also had swirled up, made a long fast climbing turn, and steadied his machine for another dive. His Hun dropped out of the formation and down in long twisting curves, apparently out of control. He had no time to watch her down, because half a dozen of the Hun scouts, deciding evidently that this couple of enemies deserved serious consideration, swung out and began to climb after the Trichords. Mel promptly dived down past them, under the two-seaters and up again under one. The instant he had her in the gun-sights he let drive and saw his bullets breaking and tearing into her. She side-slipped wildly, rolled over, and Mel watched for no more, but turned his attention and his gun to another target.

By now the half-dozen Hun scouts had obtained height enough to allow them to copy the Trichords' dive-and-shoot tactics, and down they came to the long clattering fire of their machine-guns. Both Trichords had a score of rents in wings and fuselage and tail planes, but by a mercy no shot touched a vital part. But they could hardly afford to risk such chances often, so went back to their plan of outclimbing and diving on their enemies. Over and over again they did this, and because of their far superior climb were able to keep on doing it despite every effort of the Huns. Machine after machine they sent driving down, some being uncertain "crashes" or "out-of-controls," but most of them being at least definitely "driven down" since they did not rejoin the fight, and were forced to drop to such landing-places as they could find. There were some definite "crashes," one which fell wrapped in roaring flame from stem to stern; another on which Rip saw his bullets slashing in long tears across the starboard wing, the splinters fly from a couple of the wing struts as the bullets sheared them through in splitting ragged fragments. In an instant the whole upper wing flared upward and back and tore off, the lower folded back to the body, flapped and wrenched fiercely as the machine rolled over and fell, gave and ripped loose; the port wings followed, breaking short off and away, leaving the machine to drop like a plummet to the ground. The third certain crash was in the later stages of the fight. The constant dive-and-zoom of the Trichords had the desired effect of driving the Huns lower and lower each time in their endeavour to gain speed and avoid the fierce rushes from above. Strive as they would, they could not gain an upper position. Some of them tried to fly wide and climb while the Trichords were busy with the remainder; but one or other of the two leaped out after them, hoicked up above them, drove them lower, or shot them down, in repeated dives.

The fight that had started a good 17,000 feet up and close over the trenches, finished at about 1,000 feet and six to seven miles behind the German lines. At that height, the pilot of one Hun driven into a side-slip was not able to recover in time and smashed at full speed into the ground; another was forced so low that he tried to land, hit a hedge and turned over; a third landed twisting sideways and at least tore a wing away.

Then the two Trichords, splintered and rent and gaping with explosive-bullet wounds, with their ammunition completely expended, their oil and petrol tanks running dry, turned for home, leaving their fourteen enemies scattered wide and low in the air, or piled in splintered smoking wreckage along the ground below the line of their flight. The fight with the fourteen had run without a break for three-quarters of an hour.

They never knew exactly how many victims they had "sunk, burned or destroyed." As they stated apologetically in the official "Combat Report" that night: "Owing to the close presence of other active E.A.[4] driven-down machines could not be watched to the ground."

"Frankie" was almost more annoyed over this than he was over having had to pull out of the action with a dud machine. "If we could have confirmed all your crashes," he remarked regretfully, "it would have been such a jolly boost-up to the Squadron's tally—to say nothing of my wager."