With the raising of the frontal barrage, the German raiders advanced. They were composed of storm troops, volunteers, machine gunners, artillerymen, pioneers to destroy the wire entanglements, and stretcher bearers to carry off their casualties. They had gathered round a group of ruined farm buildings some seven hundred yards from the American trenches, armed with grenades, revolvers, trench knives, and rifles. They followed, in columns of fours, a tape across no-man's-land laid out by leaders who had previously been over the ground. Advancing across a swampy ravine toward the salient, they penetrated the gaps in the American wire entanglements, and a number reached the trenches at the rear of their barrage. The Americans were thus cut off from behind. Other raiders stayed outside the trenches to protect those who entered them and to shoot any Americans who appeared above the parapet. The trenches were stormed right and left of the salient, one party clearing them as they proceeded, the other invading the dugouts for prisoners. The darkness of the trenches veiled what next happened. After the Germans had completed their work and retired, an American trooper, private Enright, was found with his throat cut from ear to ear on the top of the parapet. While fighting a German in front of him he appeared to have been attacked from behind by another armed with a trench knife. A second trooper, private Hay, lay dead in the trench, and outside a dugout was the body of Corporal Gresham. In the confusion some of the American troops mistook the Germans for their own comrades, and paid for their error. Corporal Gresham, for example, was the sentry at a dugout door when three men advanced toward him. Supposing them to be Americans he shouted: "Don't shoot! I'm an American." "It's Americans we're looking for," answered one of the three, and shot him dead with a revolver. It was a brief, ordinary affray, in nowise different from other happenings occurring nightly all along the front. But nineteen Americans were set upon by over 200 Germans, and it was the Americans' first taste of Teutonic warfare. They fought stoutly with pistols, knives, and bayonets until overcome, whereupon the Germans went off with an American sergeant, a corporal, and ten privates, all of whom were trapped in a dugout near the tip of the besieged salient. The raid scarcely lasted five minutes and outside the salient no one in the American lines knew it was proceeding. The German communiqué dismissed it in three lines. From Berlin's viewpoint it was inconsequential; but to Americans it was of moment in being their first clash with the enemy. Young, inexperienced soldiers, cooped in a position they were not familiar with, encountering their baptism of fire under circumstances of surprise, uncertainty, and darkness, had acquitted themselves well against heavy odds, and prevented the enemy from penetrating beyond the first line of trenches.