ATTACK ON GUM SWAMP.—The next movement was made on the 22nd of May. General Foster sent Colonel Lee’s brigade, consisting of the Fifth, Twenty-fifth, and Forty-sixth Massachusetts regiments, a battalion of cavalry, and three pieces of Bogg’s battery, to report to Colonel Jones, who had declared his belief that the enemy’s outpost regiments at Gum Swamp could be captured. Colonel Jones ordered a portion of the brigade to attack the enemy in front, while the rest should close up on his rear. At daylight of the 22nd, the main body of Colonel Lee’s command drove in the enemy’s pickets, and commenced an attack upon their front. Upon the rear, some of the Union batteries had been deployed, and immediately opened fire. The enemy made but faint resistance, and then scattered in confusion in every direction. One hundred and sixty-five prisoners were captured by the Unionists, and the rebel works were completely demolished. Colonel Jones then made a demonstration towards Kinston, a few miles distant; but the same evening his pickets were driven in, and he was attacked by the enemy in such strong force, that he was obliged to beat a hasty retreat, pursued by the rebels to the very edge of the Union outpost line. On the afternoon of the following day, the enemy again attacked the Unionists, but were severely repulsed at every point. In this second attack of the enemy, Colonel Jones was shot through the heart; and the army lost in him a gallant leader and efficient officer. THE EXPEDITION AGAINST ROCKY MOUNT, N. C. JULY 24, 1863.