But General Grant, like the bull-dog to which he was often compared, having inserted his teeth in his adversary, did not mean to let go. Placing his troops in front of the works, it did not take him long to invest the whole Confederate left, with the exception of a swampy strip near the river. The weather, which had been unusually mild for the season, now became extremely cold, and some of the Union men were frozen to death in the trenches. The garrison also suffered greatly, but the siege was pressed with untiring vigor. Seeing the inextricable coils closing round them, the defenders made an attempt to cut their way out, but Grant with true military genius saw the crisis and ordered an advance along the whole line, the gunboats giving all the help they could.
The situation of the garrison was so dangerous that a council of war was held that night. Floyd and Pillow were frightened nearly out of their wits. They rated themselves so high as prizes for the Federals that they determined to make their escape before the surrender, which was inevitable, was forced. Buckner was another sort of man. Disgusted with the cowardice of his associates, he quietly announced that he would stay by his men to the last. Floyd stole out of the fort with his brigade and crossed the river in boats, while Pillow followed in a scow, a large number of the cavalry galloping by the lower road to Nashville.
Grant was ready for the assault at daylight the next morning, when he received a note from General Buckner proposing an armistice until noon in order to arrange terms of capitulation. Grant's reply became famous: "No terms except immediate and unconditional surrender can be accepted; I propose to move immediately upon your works." Buckner was disappointed, but he had no choice except to submit. He was greatly relieved to find that his conqueror was a chivalrous man, who granted better terms than he expected. The privates were allowed to retain their personal baggage and the officers their side-arms. The number of prisoners was 15,000, and the blow was the first really severe one that the South had received. As may be supposed, the news caused great rejoicing in the North and was the beginning of Grant's fame as a military leader—a fame which steadily grew and expanded with the progress of the war.
Jefferson Davis saw the mistake he had made in intrusting important interests to political generals. He deprived Floyd of his command, and that officer dropped back to the level from which he never ought to have been raised. Pillow had done some good work in the Mexican War, but he was erratic and unreliable, and he, too, was summarily snuffed out. Buckner, a West Point graduate, upon being exchanged soon afterward, was assigned to an important command and proved himself an excellent soldier.
CHANGE IN THE CONFEDERATE LINE OF DEFENSE.
The capture of Forts Henry and Donelson compelled a change in the Confederate line of defense. General Albert Sidney Johnston withdrew from Bowling Green to Nashville, but fell back again upon learning of the fall of Fort Donelson, and assumed position near Murfreesboro', Tennessee. All the northern part of that State, including the Cumberland River, was given up by the Confederates, and, when the new line was established, the centre was held by Beauregard at Jackson, the left by Polk at New Madrid, and the right by Johnston at Murfreesboro'. Thus the Confederates were driven out of Kentucky and the northern part of Tennessee. It was a serious check for the Confederacy.
CAPTURE OF ISLAND NO. 10.
General Grant gave the enemy no rest. In order to retain possession of Island No. 10, it was necessary for them to hold the outpost of New Madrid. In the latter part of February, General Pope led an expedition against that place, while Commodore Foote made a demonstration in front with his gunboats. Through cold and storm the Unionists bravely pushed their way, and the garrison of New Madrid were compelled to take refuge on Island No. 10, and in the works on the Kentucky side of the river. Operations were then begun against Island No. 10. By digging a canal twelve miles long, which permitted the gunboats to pass around the defenses, and by energetic operations in all directions, the Confederate position was rendered untenable, and the post, with a large amount of war material, was surrendered to Commodore Foote.
Meanwhile, General Grant, after the occupation of Nashville, went down the Tennessee River to Pittsburg Landing, while General Buell, with the other portion of the Union army, started for the same point by land. Aware of this division of the Federal forces, General Albert Sidney Johnston hastily concentrated his own divisions with the intention of crushing the two Union armies before they could unite. When Johnston arrived in the vicinity of Pittsburg Landing on the 3d of April he had 40,000 men, divided into three corps and a reserve.
BATTLE OF PITTSBURG LANDING.