General Hurlburt, commanding on the left during the fiercest of the onslaught, and until the arrival of Buell and Nelson, reports: "From my own observation and the statement of prisoners his (Gwin's) fire was most effectual in stopping the advance of the enemy on Sunday afternoon and night."
Island No. 10 fell on the 7th. On the 11th Foote started down the river with the flotilla, anchoring the evening of the 12th fifty miles from New Madrid, just below the Arkansas line. Early the next morning General Pope arrived with 20,000 men. At 8 A.M. five Confederate gunboats came in sight, whereupon the flotilla weighed and advanced to meet them. After exchanging some twenty shots the Confederates retreated, pursued by the fleet to Fort Pillow, thirty miles below, on the first, or upper Chickasaw bluff. The flag-officer continued on with the gunboats to within a mile of the fort, making a leisurely reconnoissance, during which he was unmolested by the enemy. The fleet then turned, receiving a few harmless shots as they withdrew, and tied up to the Tennessee bank, out of range.
The following morning the mortar-boats were placed on the Arkansas side, under the protection of gunboats, firing as soon as secured. The army landed on the Tennessee bank above the fort, and tried to find a way by which the rear of the works could be reached, but in vain. Plans were then arranged by which it was hoped speedily to reduce the place by the combined efforts of army and navy; but these were frustrated by Halleck's withdrawal of all Pope's forces, except 1,500 men under command of a colonel. From this time the attacks on the fort were confined to mortar and long-range firing. Reports of the number and strength of the Confederate gunboats and rams continued to come in, generally much exaggerated; but on the 27th news of Farragut's successful passage of the forts below New Orleans, and appearance before that city, relieved Foote of his most serious apprehensions from below.
On the 23d, Captain Charles H. Davis arrived, to act as second in command to the flag-officer, and on the 9th of May the latter, whose wound, received nearly three months before at Donelson, had become threatening, left Davis in temporary command and went North, hoping to resume his duties with the flotilla at no distant date. It was not, however, so to be. An honorable and distinguished career of forty years afloat ended at Fort Pillow. Called a year later to a yet more important command, he was struck down by the hand of death at the instant of his departure to assume it. His services in the war were thus confined to the Mississippi flotilla. Over the birth and early efforts of that little fleet he had presided; upon his shoulders had fallen the burden of anxiety and unremitting labor which the early days of the war, when all had to be created, everywhere entailed. He was repaid, for under him its early glories were achieved and its reputation established; but the mental strain and the draining wound, so long endured in a sickly climate, hastened his end.