Under cover of night all the wounded that were able to walk or crawl made their way to places of safety in the rear; while, disregarding the incessant fire of the sharp-shooters, heavy details and volunteer parties of stretcher-bearers, plying their melancholy trade, carried the wounded with gentle care to the hospitals and the dead swiftly to the long trenches. The proportion of killed and mortally wounded, already unusually heavy, was increased by the exposure and privations of the long day, while many, whom it was impossible to find or reach during the night, succumbed sooner or later during the next forty-eight hours. For although when, on the morning of the 15th, Banks sent a flag of truce asking leave to send in medical and hospital supplies for the comfort of the wounded of both armies, Gardner promptly assented, and in his reply called attention to the condition of the dead and wounded before the breastworks, yet it was not until the evening of the 16th that Banks could bring himself to ask for a suspension of hostilities for the relief of the suffering and the burial of the slain. But three days and two nights had already passed; most of the hurt, and these the most grievously, were already beyond the need of succor. The same thing had already occurred at Vicksburg. The operations at Vicksburg and Port Hudson were so far alike in their character and objects that no just estimate of the events at either place can well be formed without considering what happened at the other. In this view it is instructive to observe that Grant assaulted the Confederate position at Vicksburg within a few hours after the arrival of his troops in front of the place, on the afternoon of the 19th of May, when two determined attacks were easily thrown off by the defenders, with a loss to their assailants of 942 men. On the 22d of May Grant delivered the second assault, in which about three fourths of his whole effective force of 43,000 of all arms were engaged. The full corps of Sherman and McPherson, comprising six divisions, were repulsed by four brigades of the garrison, numbering probably 13,000 effectives. In this second assault Grant's loss was 3,199. These are the reasons he gives for his decision to attack: "Johnston was in my rear, only fifty miles away, with an army not much in inferior in numbers to the one I had with me, and I knew he was being reinforced. There was danger of his coming to the assistance of Pemberton, and, after all, he might defeat my anticipations of capturing the garrison, if, indeed, he did not prevent the capture of the city. The immediate capture of Vicksburg would save sending me the reinforcements which were so much wanted elsewhere, and would set free the army under me to drive Johnston from the State. But the first consideration of all was--the troops believed they could carry the works in their front, and they would not have worked so patiently in their trenches if they had not been allowed to try."