The Spaniards, meanwhile, with their Mausers, kept up a terrific fire, but the Americans and their Springfields soon began a vociferous reply. The Utah artillerymen displayed remarkable coolness, and worked their four guns like veterans. Though there was a perfect hail of bullets, only one man was hit, and he but slightly wounded. The Spanish fire was now concerted, and their bullets whistled, sang, and fell all round the Americans. Most of them, however, were too high, though they sounded dangerously near. Across the open field, to the rear of the American trenches, now came two companies, under the command of Major Bierer. It was here in this unprotected field, swept by Mauser bullets, that the first American lost his life. Corporal W. E. Brown, of Company D, Tenth Pennsylvania, was the hero. He was shot through the body. Many others around him were wounded, and, a few minutes later, Private William E. Stillwagon was also killed. The men, notwithstanding, kept right on, and continued to shoot; though, on account of the darkness, they could not see the enemy; their fire, therefore, was not effective. At this juncture gallant Captain O'Hara, in command of the Third Artillery, still in camp, who knew that the boys in front must soon be in want of ammunition, ordered his command to the rescue. And they came in the nick of time. For the soldiers in the trenches had but a few rounds of cartridges left. Many of the men, too, were shooting wild; others, also, were somewhat demoralized; for the darkness, the danger, and the uncertainty of the enemy were most disconcerting to raw troops; but the example of Lieutenant Krayenbuhl and his regulars, who kept up a steady fire, had good effect upon the volunteers; they soon recovered themselves, and, with a rousing cheer, the whole command moved onward. Meanwhile, General Greene sent other reinforcements to the front,--Colonel Smith, with part of his regiment, the First California. As Boxton's battalion of Californians advanced through the open field, they received the terrible Spanish fire, and many were shot, and were left by the way. It was here that Captain Reinhold Richter, of Company I, was fatally shot; and here, too, First Sergeant Morris Jurth, of Company A, was killed. It was said that these Californians, not knowing of the presence of the Pennsylvanians and of the regulars in front, fired three volleys at them before the mistake was discovered. It is believed, however, that no damage was done by the firing; but it was a mistake that might have cost the Americans dearly. Meanwhile, two men were killed in the trenches: Sergeant McIlrath, of Battery H., Tenth Pennsylvania, who had recklessly exposed himself upon the parapet, and Private Brady of Company I, the same regiment.