Comparable only with the surgeon's skill in the skill which has life and death as the stake of its result is the gunner's. The surgeon is trying to save one life which a slip of the knife may destroy; the gunner is trying both to save and to take life. In the gunner's skill life that is young and sturdy, muscles that are hardened by exercise and drill, manhood in its pink, must place its trust. A little carelessness or the slightest error and monsters with their long, fiery reach may strike you in the back instead of the enemy in front, and instead of dead and wounded and capitulation among smashed dugouts and machine gun positions you may be received by showers of bombs. No wonder that gunners work hard! No wonder that discipline is tightened by the screw of fearful responsibility!
At the front we had a sort of reverence for Grandmother, the first of the fifteen-inch howitzers to arrive as the belated answer of "prepared England" who "forced the war" on "unprepared Germany" to the famous forty-two centimeters that pounded Liège and Maubeuge. Gently Grandmother with her ugly mouth and short neck and mammoth supporting ribs of steel was moved and nursed; for she, too, was temperamental. Afterward, Grandfather came and Uncle and Cousin and Aunt and many grown sons and daughters, until the British could have turned the city of Lille into ruins had they chosen; but they kept their destruction for the villages on the Somme, which represent a property loss remarkably small, as the average village could be rebuilt for not over two hundred thousand dollars.
Other children of smaller caliber also arrived in surprising numbers. Make no mistake about that nine-inch howitzer, which appears to be only a monstrous tube of steel firing a monstrous shell, not being a delicately adjusted piece of mechanism. The gunner, his clothes oil-soaked, who has her breech apart pays no attention to the field of guns around him or the burst of a shell a hundred yards away, no more than the man with a motor breakdown pays to passing traffic. Is he a soldier? Yes, by his uniform, but primarily a mechanic, this man from Birmingham, who is polishing that heavy piece of steel which, when it locks in the breech, holds the shell fast in place and allows all the force of the explosion to pass through the muzzle, while the recoil cylinder takes up the shock as nicely as on a battleship, with no tremble of the base set in the débris of a village. He shakes his head, this preoccupied mechanician. It may be necessary to call in the gun doctor. His "how" has been in service a long time, but is not yet showing the signs of general debility of the eight-inch battery near by. They have fired three times their allowance and are still good for sundry purposes in the gunner-general's play of red and black pins on his map. The life of guns has surpassed all expectations; but the smaller calibers forward and the soixante-quinze must not suffer from general debility when they lay on a curtain of fire to cover a charge.
War is still a matter of projectiles, of missiles thrown by powder, whether cannon or rifle, as it was in Napoleon's time, the change being in range, precision and destructive power. The only new departure is the aeroplane, for the gas attack is another form of the Chinese stink-pot and our old mystery friend Greek fire may claim antecedence to the Flammenwerfer. The tank with its machine guns applied the principle of projectiles from guns behind armor. Steel helmets would hardly be considered an innovation by mediæval knights. Bombs and hand grenades and mortars are also old forms of warfare, and close-quarter fighting with the bayonet, as was evident to all practical observers before the war, will endure as long as the only way to occupy a position is by the presence of men on the spot and as long as the defenders fight to hold it in an arena free of interference by guns which must hold their fire in fear of injury to your own soldiers as well as to the enemy.
With all the inventive genius of Europe applied in this war, the heat ray or any other revolutionary means of killing which would make guns and rifles powerless has not been developed. It is still a question of throwing or shooting projectiles accurately at your opponent, only where once it was javelin, or spear, or arrow, now it is a matter of shells for anywhere from one mile to twenty miles; and the more hits that you could make with javelins or arrows and can make with shells the more likely it is that victory will incline to your side. Where flights of arrows hid the sun, barrages now blanket the earth.
The improvement in shell fire is revolutionary enough of itself. Steadily the power of the guns has increased. What they may accomplish is well illustrated by the account of a German battalion on the Somme. When it was ten miles from the front a fifteen-inch shell struck in its billets just before it was ordered forward. On the way luck was against it at every stage of progress and it suffered in turn from nine-inch, eight-inch and six-inch shells, not to mention bombs from an aviator flying low, and afterward from eighteen pounders. When it reached the trenches a preliminary bombardment was the stroke of fate that led to the prompt capitulation of some two hundred survivors to a British charge. The remainder of the thousand men was practically all casualties from shell-bursts, which, granting some exaggeration in a prisoner's tale, illustrates what killing the guns may wreak if the target is under their projectiles.
The gunnery of 1915 seems almost amateurish to that of 1916, a fact hardly revealed to the public by its reading of bulletins and of such a quantity of miscellaneous information that the significance of it becomes obscure. At the start of the war the Germans had the advantage of many mobile howitzers and immense stores of high explosive shells, while the French were dependent on their soixante-quinze and shrapnel; and at this disadvantage the brilliancy of their work with this wonderful field gun on the Marne and in Lorraine was the most important contributory factor in saving France next to the vital one of French courage and organization. The Allies had to follow the German suit with howitzers and high explosive shells and the cry for more and more guns and more and more munitions for the business of blasting your enemy and his positions to bits became universal.
The first barrage, or curtain of fire, ever used to my knowledge was a feeble German effort in the Ypres salient in the autumn of 1914, though the French drum fire distributed over a certain area had, in a sense, a like effect. To make certain of clearness about fundamentals familiar to those at the front but to the general public only a symbol for something not understood, a curtain of fire is a swath of fragments and bullets from bursting projectiles which may stop a charge or prevent reserves from coming to the support of the front line. It is a barrier of death, the third rail of the battlefield. From the sky shrapnel descend with their showers of bullets, while the high explosives heave up the earth under foot. Shrapnel largely went out of fashion in the period when high explosives smashed in trenches and dugouts; but the answer was deeper dugouts too stoutly roofed to permit of penetration and shrapnel returned to play a leading part again, as we shall see in the description of a charge under an up-to-date curtain of fire in another chapter.
Counter-battery work is another one of the gunner-general's cares, which requires, as it were, the assistance of the detective branch. Before you can fight you must find the enemy's guns in their hiding-places or take a chance on the probable location of his batteries, which will ordinarily seek every copse, every sunken road and every reverse slope. The interesting captured essay on British fighting methods, by General von Arnim, the general in command of the Germans opposite the British on the Somme, with its minutiæ of directions indicative of how seriously he regarded the New Army, mentioned the superior means of reporting observations to the guns used by British aeroplanes and warned German gunners against taking what had formerly been obvious cover, because British artillery never failed to concentrate on those spots with disastrous results.
Where aeroplanes easily detect lines, be they roads or a column of infantry, as I have said, a battery in the open with guns and gunners the tint of the landscape is not readily distinguishable at the high altitude to which anti-aircraft gunfire restricts aviators. When a concentration begins on a battery, either the gunners must go to their dugouts or run beyond the range of the shells until the "strafe" is over. If A could locate all of B's guns and had two thousand guns of his own to keep B's two thousand silenced by counter-battery work and two thousand additional to turn on B's infantry positions, it would be only a matter of continued charges under cover of curtains of fire until the survivors, under the gusts of shells with no support from their own guns, would yield against such ghastly, hopeless odds.