There came a Sabbath morning,--one of the loveliest of all the year. The sun rose upon a cloudless sky, the air was laden with the fragrance of locust and alder blossoms, the oaks of the forest were changing from the gray of winter to the green of summer. Beneath their wide-spread branches were the tents of a great army; for after the capture of Fort Donelson the troops sailed up the Tennessee, and were preparing to attack the Rebels at Corinth. Paul was lying in his tent, thinking of home, of the calmness and stillness there, broken only by the chirping of the sparrows and robins, the church-bell, the choir, and the low voices of the congregation. How different from what was passing around him, where the drummers were beating the reveille! He was startled from his waking dream by a sudden firing out among the pickets. What could it mean? It grew more furious. There was confusion. He sprang to his feet and looked out to see what was the matter. Soldiers were running through the camp. "What is the row?" he asked. "The Rebels are attacking us." It did not take him long to dress; but, while pulling on his boots, a bullet tore through the tent-cloth over his head. The camp was astir. Officers shouted, "Fall in!" Soldiers, waking from sound sleep, buckled on their cartridge-boxes, seized their guns, and took their places in the ranks before they were fairly awake. The drummers beat the long-roll, the buglers sounded the signal for saddling horses, the artillery-men got their guns ready, cavalry-men leaped into their saddles, baggage-wagons went thundering towards the river. There was a volley of musketry, and then a deeper roar from the artillery, and the terrible contest of the day began, which became more terrific from morning till noon, from noon till night, with deafening rolls of musketry, with the roaring of a hundred cannon, with the yelling of the Rebels and the cheering of the soldiers of the Union, as the tempest surged through the forest, up and down the ravines, around Shiloh church, in the old cotton-fields, up to the spring where the country people were accustomed to eat their Sunday dinners, down to the Tennessee River, where the gunboats were waiting for the hour when they could open with their great guns.