During a bout of active service one happens upon experiences that, though they make no immediate impression, become more prominent than the most dramatic events, when the period is past and can be viewed in retrospect. Sub-consciousness, wiser than the surface brain, penetrates to the inner sanctuary of true values, photographs something typical of war's many aspects, places the negative in the dark room of memory, and fades into inertia until again called upon to act as arbiter of significance for everyday instinct. Not till long later, when released from the tension of danger and abnormal endeavour, is one's mind free to develop the negative and produce a clear photograph. The sensitive freshness of the print then obtained is likely to last a lifetime. I leave a detailed explanation of this process to the comic people who claim acquaintance with the psychology of the immortal soul; for my part, I am content to remain a collector of such mental photographs.

A few examples of the sub-conscious impressions gathered during my last year's term at the Front are the curious smile of a dead observer as we lifted his body from a bullet-plugged machine; the shrieking of the wires whenever we dived on Hun aircraft; a tree trunk falling on a howitzer; a line of narrow-nosed buses, with heavy bombs fitted under the lower planes, ready to leave for their objective; the ghostliness of Ypres as we hovered seven thousand feet above its ruins; a certain riotous evening when eight of the party of fourteen ate their last dinner on earth; a severe reprimand delivered to me by a meticulous colonel, after I returned from a long reconnaissance that included four air flights, for the crime of not having fastened my collar before arrival on the aerodrome at 5 A.M.; a broken Boche aeroplane falling in two segments at a height of ten thousand feet; the breathless moments at a Base hospital when the surgeon-in-charge examined new casualties to decide which of them were to be sent across the Channel; and clearest of all, the brown-faced infantry marching back to the trenches from our village.

A muddy, unkempt battalion would arrive in search of rest and recuperation. It distributed itself among houses, cottages, and barns, while the Frenchwomen looked sweet or sour according to their diverse tempers, and whether they kept estaminets, sold farm produce, had husbands lÀbas, or merely feared for their poultry and the cleanliness of their homes. Next day the exhausted men would reappear as beaux sabreurs with bright buttons, clean if discoloured tunics, and a jaunty, untired walk. The drum and fife band practised in the tiny square before an enthusiastic audience of gamins. Late every afternoon the aerodrome was certain to be crowded by inquisitive Tommies, whose peculiar joy it was to watch a homing party land and examine the machines for bullet marks. The officers made overtures on the subject of joy-rides, or discussed transfers to the Flying Corps. Interchange of mess courtesies took place, attended by a brisk business in yarns and a mutual appreciation of the work done by R.F.C. and infantry.Then, one fine day, the drum and fife rhythm of "A Long, Long Trail" would draw us to the roadside, while our friends marched away to Mouquet Farm, or Beaumont Hamel, or Hohenzollern Redoubt, or some other point of the changing front that the Hun was about to lose. And as they left, the men were mostly silent; though they looked debonair enough with their swinging quickstep and easy carriage, and their frying-pan hats set at all sorts of rakish angles. Their officers would nod, glance enviously at the apple-trees and tents in our pleasant little orchard, and pass on to the front of the Front, and all that this implied in the way of mud, vermin, sudden death, suspense, and damnable discomfort. And returning to the orchard we offered selfish thanks to Providence in that we were not as the millions who hold and take trenches.

The flying officer in France has, indeed, matter for self-congratulation when compared with the infantry officer, as any one who has served in both capacities will bear witness. Flying over enemy country is admittedly a strain, but each separate job only lasts from two to four hours. The infantryman in the front line is trailed by risk for the greater part of twenty-four hours daily. His work done, the airman returns to fixed quarters, good messing, a bath, plenty of leisure, and a real bed. The infantry officer lives mostly on army rations, and as often as not he sleeps in his muddy clothes, amid the noise of war, after a long shift crammed with uncongenial duties. As regards actual fighting the airman again has the advantage. For those with a suitable temperament there is tense joy in an air scrap; there is none in trudging along a mile of narrow communication trench, and then, arrived at one's unlovely destination, being perpetually ennuied by crumps and other devilries. And in the game of poker played with life, death, and the will to destroy, the airman has but to reckon with two marked cards—the Ace of Clubs, representing Boche aircraft, and the Knave Archibald; whereas, when the infantryman stakes his existence, he must remember that each sleeve of the old cheat Death contains half a dozen cards.

All this by way of prelude to a protest against the exaggerative ecstasies indulged in by many civilians when discussing the air services. The British pilots are competent and daring, but they would be the last to claim an undue share of war's glory. Many of them deserve the highest praise; but then so do many in all other fighting branches of Army and Navy. An example of what I mean is the reference to R.F.C. officers, during a Parliamentary debate, as "the super-heroes of the war,"—a term which, for ungainly absurdity, would be hard to beat. To those who perpetrate such far-fetched phrases I would humbly say: "Good gentlemen, we are proud to have won your approval, but for the Lord's sake don't make us ridiculous in the eyes of other soldiers."

Yet another asset of the airman is that his work provides plenty of scope for the individual, who in most sections of the Army is held on the leash of system and co-operation. The war pilot, though subject to the exigencies of formation flying, can attack and manoeuvre as he pleases. Most of the star performers are individualists who concentrate on whatever methods of destroying an enemy best suit them.

Albert Ball, probably the most brilliant air fighter of the war, was the individualist in excelsis. His deeds were the outcome partly of pluck—certainly not of luck—but mostly of thought, insight, experiment, and constant practice. His knowledge of how to use sun, wind, and clouds, coupled with an instinct for the "blind side" of whatever Hun machine he had in view, made him a master in the art of approaching unobserved. Arrived at close quarters, he usually took up his favourite position under the German's tail before opening fire. His experience then taught him to anticipate any move that an unprepared enemy might make, and his quick wits how to take advantage of it. Last autumn, whenever the weather kept scout machines from their patrols but was not too bad for joy-flying, he would fly near the aerodrome and practise his pet manoeuvres for hours at a time. In the early days of Ball's dazzling exploits his patrol leader once complained, after an uneventful trip, that he left the formation immediately it crossed the lines, and stayed away until the return journey. Ball's explanation was that throughout the show he remained less than two hundred feet below the leader's machine, "practising concealment."

The outstanding pilots of my old squadron were all individualists in attack, and it was one of my hobbies to contrast their tactics. C., with his blind fatalism and utter disregard of risk, would dive a machine among any number of Huns, so that he usually opened a fight with an advantage of startling audacity. S., another very successful leader, worked more in co-operation with the machines behind him, and took care to give his observer every chance for effective fire. His close watch on the remainder of the formation saved many a machine in difficulties from disaster. V., my pilot and flight-commander, was given to a quick dive at the enemy, a swerve aside, a recul pour mieux sauter, a vertical turn or two, and another dash to close grips from an unexpected direction, while I guarded the tail-end.

But writing reminiscences of Umpty Squadron's early days is a melancholy business. When it was first formed all the pilots were picked men, for the machines were the best British two-seaters then in existence, and their work throughout the autumn push was to be more dangerous than that of any squadron along the British front. The price we paid was that nine weeks from our arrival on the Somme only nine of the original thirty-six pilots and observers remained. Twelve officers flew to France with the flight to which I belonged. Six weeks after their first job over the lines I was one of the only two survivors. Three of the twenty-five who dropped out returned to England with wounds or other disabilities; the rest, closely followed by twenty of those who replaced them, went to Valhalla, which is half-way to heaven; or to Karlsruhe, which is between hell and Freiburg-im-Brisgau.

And the reward? One day, in a letter written by a captured Boche airman, was found the sentence: "The most-to-be-feared of British machines is the S——." The umptieth squadron then had the only machines of this type in France.

During the short period of their stay with us, the crowd of boys thus rudely snatched away were the gayest company imaginable; and, indeed, they were boys in everything but achievement. As a patriarch of twenty-four I had two more years to my discredit than the next oldest among the twelve members of our flight-mess. The youngest was seventeen and a half. Our Squadron Commander, one of the finest men I have met in or out of the army, became a lieutenant-colonel at twenty-five. Even he was not spared, being killed in a flying accident some months later.

Though we were all such good friends, the high percentage of machines "missing" from our hangars made us take the abnormal casualties almost as a matter of course at the time. One said a few words in praise of the latest to go, and passed on to the next job. Not till the survivors returned home did they have time, away from the stress of war, to feel keen sorrow for the brave and jolly company. For some strange reason, my own hurt at the loss was toned down by a mental farewell to each of the fallen, in words borrowed from the song sung by an old-time maker of ballads when youth left him: "Adieu, la trÈs gente compagne."

The crowded months of the umptieth squadron from June to November were worth while for the pilots who survived. The only two of our then flight-commanders still on the active list are now commanding squadrons, while all the subaltern pilots have become flight-commanders. The observers, members of a tribe akin to Kipling's Sergeant Whatsisname, are as they were in the matter of rank, needless to say.

For my part, on reaching Blighty by the grace of God and an injured knee, I decided that if my unworthy neck were doomed to be broken, I would rather break it myself than let some one else have the responsibility. It is as a pilot, therefore, that I am about to serve another sentence overseas. A renewal of Archie's acquaintance is hardly an inviting prospect, but with a vivid recollection of great days with the old umptieth squadron, I shall not be altogether sorry to leave the hierarchy of home instructordom for the good-fellowship of active service. In a few months' time, after a further period of aerial outings, I hope to fill some more pages of Blackwood,[2] subject always to the sanction of their editor, the bon Dieu, and the mauvais diable who will act as censor. Meanwhile, I will try to sketch the daily round of the squadron in which I am proud to have been an observer.

"Quarter to five, sir, and a fine morning. You're wanted on the aerodrome at a quarter past."

I sit up. A shiver, and a return beneath the blankets for five minutes' rumination. Dressing will be dashed unpleasant in the cold of dawn. The canvas is wet with the night's rain. The reconnaissance is a long one, and will take fully three hours. The air at 10,000 feet will bite hard. Must send a field post-card before we start. Not too much time, so out and on with your clothes. Life is wrotten.

While dressing we analyse the weather, that pivot of our day-to-day existence. On the weather depends our work and leisure, our comparative risks and comparative safety. Last thing at night, first thing in the morning, and throughout the day we search the sky for a sign. And I cannot deny that on occasions a sea of low clouds, making impossible the next job, is a pleasant sight.

The pale rose of sunrise is smudging over the last flickerings of the grey night. Only a few wisps of cloud are about, and they are too high to bother us. The wind is slight and from the east, for which many thanks, as it will make easier the return half of the circuit.

We wrap ourselves in flying kit and cross the road to the aerodrome. There the band of leather-coated officers shiver while discussing their respective places in the formation. A bus lands and taxies to a shed. From it descends the Squadron Commander, who, with gum-boots and a warm coat over his pyjamas, has been "trying the air." "Get into your machines," he calls. As we obey he enters his hut-office and phones the wing headquarters.

The major reappears, and the command "Start up!" is passed along the line of machines. Ten minutes later we head for the trenches, climbing as we travel.It was cold on the ground. It was bitter at 5000 feet. It is damnable at 10,000 feet. I lean over the side to look at Arras, but draw back quickly as the frozen hand of the atmosphere slaps my face. My gloved hands grow numb, then ache profoundly when the warm blood brings back their power to feel. I test my gun, and the trigger-pressure is painful. Life is worse than rotten, it is beastly.

But the cold soon does its worst, and a healthy circulation expels the numbness from my fingers. Besides, once we are beyond the lines, the work on hand allows small opportunity to waste time on physical sensations. On this trip there is little interruption, thank goodness. Archie falls short of his average shooting, and we are able to outpace a group of some twelve Hun two-seaters that try to intercept us. The movement below is noted, the round is completed according to programme, and we turn westward and homeward.

Have you ever sucked bull's-eyes, respected sir or madame? If not, take it from me that the best time to try them is towards the end of a three-hour flight over enemy country. Five bull's-eyes are then far more enjoyable than a five-course meal at the Grand Babylon Hotel. One of these striped vulgarities both soothes and warms me as we re-cross the trenches.

Down go the noses of our craft, and we lose height as the leader, with an uneven, tree-bordered road as guide, makes for Doulens. From this town our aerodrome shows up plainly towards the south-west. Soon we shall be in the mess marquee, behind us a completed job, before us a hot breakfast. Life is good.

Arrived on land we are met by mechanics, each of whom asks anxiously if his particular bus or engine has behaved well. The observers write their reports, which I take to the Brass Hats at headquarters. This done, I enter the orchard, splash about in a canvas bath, and so to a contented breakfast.

Next you will find most of the squadron officers at the aerodrome, seated in deck-chairs and warmed by an early autumn sun. It is the most important moment of the day—the post has just arrived. All letters except the one from His Majesty's impatient Surveyor of Taxes, who threatens to take proceedings "in the district in which you reside," are read and re-read, from "My dearest Bill" to "Yours as ever." Every scrap of news from home has tremendous value. Winkle, the dinky Persian with a penchant for night life, has presented the family with five kittens. Splendid! Lady X., who is, you know, the bosom friend of a certain Minister's wife, says the war will be over by next summer at the latest. Splendid again! Life is better than good, it is amusing.

Yesterday's London papers have been delivered with the letters. These also are devoured, from light leaders on electoral reform to the serious legends underneath photographs of the Lady Helen Toutechose, Mrs. Alexander Innit, and Miss Margot Rheingold as part-time nurses, canteeners, munitioners, flag-sellers, charity matinee programme sellers, tableaux vivants, and patronesses of the undying arts. Before turning to the latest number of the 'Aeroplane,' our own particular weekly, one wonders idly how the Lady Helen Toutechose and her emulators, amid their strenuous quick-change war-work, find time to be photographed so constantly, assiduously, and distractingly.

We pocket our correspondence and tackle the morning's work. Each pilot makes sure that his machine is overhauled, and if necessary, he runs the engine or puts a re-rigged bus through its paces. I am told off to instruct half a dozen officers newly arrived from the trenches on how to become a reliable reconnaissance observer in one week. Several of us perform mysteriously in the workshops, for we are a squadron of many inventors.

Every other officer has a pet mechanical originality. Marmaduke is preparing a small gravity tank for his machine, to be used when the pressure tank is ventilated by a bullet. The Tripehound has a scheme whereby all the control wires can be duplicated. Some one else has produced the latest thing in connections between the pilot's joystick and the Vickers gun. I am making a spade-grip trigger for the Lewis gun, so that the observer can always have one hand free to manipulate the movable back-sight. When one of these deathless inventions is completed the real hard work begins. The new gadget is adopted unanimously by the inventor himself, but he has a tremendous task in making the rest of the squadron see its merits.

After lunch we scribble letters, for the post leaves at five. As we write the peaceful afternoon is disturbed by the roar of five engines. B Flight is starting up in readiness for an offensive patrol. Ten minutes later more engines break into song, as three machines of C Flight leave to photograph some new lines of defence before Bapaume. The overhead hum dies away, and I allow myself a sleep in payment of the early morning reconnaissance.

Wearing a dress suit I am seated on the steps of a church. On my knee is a Lewis gun. An old gentleman, very respectable in dark spats, a black tie, and shiny top-hat, looks down at me reproachfully.

"Very sad," he murmurs.

"Don't you think this trigger's a damned good idea?" I ask.

"Young man, this is an outrage. As you are not ashamed enough to leave the churchyard of your own accord, I shall have you turned out."

I laugh and proceed to pass some wire through the pistol-grip. The old man disappears, but he returns with three grave-diggers, who brandish their spades in terrifying manner. "Ha!" I think, "I must fly away." I fly my wings (did I tell you I had wings?) and rise above the church tower. Archie has evidently opened fire, for I hear a near-by wouff. I try to dodge, but it is too late. A shell fragment strikes my nose. Much to my surprise I find I can open my eyes. My nose is sore, one side of the tent waves gently, and a small apple reposes on my chest.

Having run into the open I discover that the disengaged members of C Flight are raiding our corner with the sour little apples of the orchard. We collect ammunition from a tree and drive off the attackers. A diversion is created by the return of the three photography machines. We troop across to meet them.

The next scene is the aerodrome once again. We sit in a group and censor letters. The countryside is quiet, the sun radiates cheerfulness, and the war seems very remote. But the mechanics of B Flight stand outside their sheds and look east. It is time the offensive patrol party were back.

"There they are," says a watcher. Three far-away specks grow larger and larger. As they draw near, we are able to recognise them as our buses, by the position of their struts and the distinctive drone of their engines.

Four machines crossed the lines on the expedition; where is the fourth? The crew of the other three do not know. They last saw the missing craft ten miles behind the Boche trenches, where it turned west after sending up a Very's light to signal the necessity of an immediate return. There were no Huns in sight, so the cause must have been engine trouble.

The shadows of the lost pilot and observer darken the first ten minutes at the dinner-table. However, since cheerfulness is beyond godliness, we will take this to be an anxious occasion with a happy ending. Comes a welcome message from the orderly officer, saying that the pilot has phoned. His reason for leaving the patrol was that his engine went dud. Later it petered out altogether, so that he was forced to glide down and land near a battery of our howitzers.

The conversational atmosphere now lightens. Some people from another squadron are our guests, and with them we exchange the latest flying gossip. The other day, X rammed a machine after his gun had jambed. Y has been given the Military Cross. Archie has sent west two machines of the eleventeenth squadron. While on his way home, with no more ammunition, Z was attacked by a fast scout. He grabbed a Very's pistol and fired at the Boche a succession of lights, red, white, and green. The Boche, taking the rockets for a signal from a decoy machine, or from some new form of British frightfulness, promptly retired.

Dinner over, the usual crowd settle around the card-table, and the gramophone churns out the same old tunes. There is some dissension between a man who likes music and another who prefers rag-time. Number one leads off with the Peer Gynt Suite, and number two counters with the record that choruses: "Hello, how are you?" From the babel of yarning emerges the voice of our licensed liar—

"So I told the General he was the sort of bloke who ate tripe and gargled with his beer."

"Flush," calls a poker player.

"Give us a kiss, give us a kiss, by wireless," pleads the gramophone.

"Good-night, chaps. See you over Cambrai." This from a departing guest.

Chorus—"Good-night, old bean."

A somewhat wild evening ends with a sing-song, of which the star number is a ballad to the tune of "Tarpaulin Jacket," handed down from the pre-war days of the Flying Corps, and beginning—

On turning in we give the sky a final scour. It is non-committal on the subject of to-morrow's weather. The night is dark, the moon is at her last quarter, only a few stars glimmer.

I feel sure the land needs rain. If it be fine to-morrow we shall sit over Archie for three hours. If it be conveniently wet we shall charter a light tender and pay a long-deferred visit to the city of ArriÈre. There I shall visit a real barber; pass the time of day with my friend Henriette, whose black eyes and ready tongue grace a book shop of the Rue des Trois Cailloux; dine greatly at a little restaurant in the Rue du Corps Nu Sans TÊte; and return with reinforcements of Anatole France, collar-studs, and French slang.

FOOTNOTE: