The shells from the trench mortars proper, and most of the "fish-tail" family, are somewhat similar to ordinary artillery shells in that they are made of steel or iron and designed to burst into small fragments, each of which constitutes a deadly missile. On the other hand, the "mines" thrown by the Minenwerfer, are merely light sheet-metal containers for heavy charges of high explosives (T. N. T. or tri-nitro-toluol as a rule), and depend for their effectiveness on the shock and blasting effect of the detonation. They have been increasing in size continually. At first we called them "sausages," then "rum-jars" (they resembled the ordinary one-gallon rum jar in size and shape), then they became "flying pigs" and by this time, I have no doubt, new and still more expressive names have been applied to them.
The havoc created in a trench by one of the large ones passes belief. The strongest dug-out is wiped out in a twinkle; whole sections of parapet are obliterated, and where was a strong, well-built wall eight feet or more in height there remains a hole or "crater" fifteen or twenty feet in diameter and several feet deep. Any man who happens to be within this area is, of course, blown to atoms, while frequently men in the near vicinity, but not exposed to the direct blast, are killed instantaneously by the shock. Medical men say that the effect is identical to that known as "caisson sickness," and is caused by the formation of bubbles of carbonic acid gas in the blood vessels. Not being a "medico" I can not vouch for this, but you can take it for what it is worth.
In daylight it is not difficult to dodge these devilish things and even at night, if they come one at a time, it is possible to escape the most of them, but when they come over in flocks, as they sometimes do, it is more a matter of luck than anything else.
CHAPTER XIV
Fourteen Days' Fighting
Lewis Gun in Action in Front-Line Trench.
By this time there was no doubt of the enemy's superiority in artillery, and to make matters worse, the craters were changing hands daily or even hourly. We never knew, for sure, whether our troops or those of the enemy held any certain crater, except the ones on each end, numbers one and six (we held them throughout the entire two months of fighting), but numbers two, three, four and five were debatable ground for several weeks. On two occasions I made the complete circuit of all the craters at night, going through the Canadian trench and coming back via what had been our original front line. On one of these trips I was accompanied by Captain Congreve, afterward Major Congreve, V. C., (now dead) who was the only staff officer I saw in that sector during all the time we were in the line. Sometimes we met individual German sentries and quick, quiet and accurate work was necessary to avoid detection and probable capture. I found that a French bayonet, the rapier shape, was a very satisfactory weapon at such times. Trench knives have been invented since and may be an improvement. After leaving me that night Captain Congreve came upon a party of eighty-two Germans, commanded by an officer, who had been cut off in one of the craters for several days, without food or ammunition, and captured them all, single-handed. For this feat he received the Distinguished Service Order and promotion to Major. Later, on the Somme, he continued his brilliant work and won the award of the Victoria Cross, but was killed at Mametz Wood before receiving the decoration, which was given to his widow. He was only twenty-five at the time of his death but had proved himself one of the most enterprising officers in the British army.
What had been left of the village of St. Eloi when the fight commenced was rapidly disappearing under the hail of shells. Where our original front line had been there remained but few detached fragments of parapet. For perhaps six hundred yards we were holding on with scattered and isolated groups. At one place, on our immediate left, was a hole in the line at least two hundred yards wide. Time after time the Canadians attacked and retook the craters, only to be literally blown out of them by the ensuing hurricane of shells.