The Union arms had captured New Orleans, in the spring of 1862, and Memphis in June of that year; but the Confederates still held Vicksburg and Port Hudson and the two hundred and fifty miles of river that lies between them. The military object of the Federal armies in the West was to gain control of the entire course of the great Mississippi that it might “roll unvexed to the sea,” to use Lincoln’s terse expression, and that the rich States of the Southwest, from which the Confederacy drew large supplies and thousands of men for her armies, might be cut off from the rest of the South. If Vicksburg were captured, Port Hudson must fall. The problem, therefore, was how to get control of Vicksburg.

On the promotion of Halleck to the command of all the armies of the North, with headquarters at Washington, Grant was left in superior command in the West and the great task before him was the capture of the “Gibraltar of the West.” Vicksburg might have been occupied by the Northern armies at any time during the first half of the year 1862, but in June of that year General Bragg sent Van Dorn with a force of fifteen thousand to occupy and fortify the heights. Van Dorn was a man of prodigious energy. In a short time he had hundreds of men at work planting batteries, digging rifle-pits above the water front and in the rear of the town, mounting heavy guns and building bomb-proof magazines in tiers along the hillsides. All through the summer, the work progressed under the direction of Engineer S. H. Lockett, and by the coming of winter the city was a veritable Gibraltar.

From the uncompleted batteries on the Vicksburg bluffs, the citizens and the garrison soldiers viewed the advance division of Farragut’s fleet, under Commander Lee, in the river, on May 18, 1862. Fifteen hundred infantry were on board, under command of General Thomas Williams, and with them was a battery of artillery. Williams reconnoitered the works, and finding them too strong for his small force he returned to occupy Baton Rouge. The authorities at Washington now sent Farragut peremptory orders to clear the Mississippi and accordingly about the middle of June, a flotilla of steamers and seventeen mortar schooners, under Commander D. D. Porter, departed from New Orleans and steamed up the river. Simultaneously Farragut headed a fleet of three war vessels and seven gunboats, carrying one hundred and six guns, toward Vicksburg from Baton Rouge. Many transports accompanied the ships from Baton Rouge, on which there were three thousand of Williams’ troops.

The last days of June witnessed the arrival of the combined naval forces of Farragut and Porter below the Confederate stronghold. Williams immediately disembarked his men on the Louisiana shore, opposite Vicksburg, and they were burdened with implements required in digging trenches and building levees.

The mighty Mississippi, at this point and in those days, swept in a majestic bend and formed a peninsula of the western, or Louisiana shore. Vicksburg was situated on the eastern, or Mississippi shore, below the top of the bend. Its batteries of cannon commanded the river approach for miles in either direction. Federal engineers quickly recognized the strategic position of the citadel on the bluff; and also as quickly saw a method by which the passage up and down the river could be made comparatively safe for their vessels, and at the same time place Vicksburg “high and dry” by cutting a channel for the Mississippi through the neck of land that now held it in its sinuous course.

While Farragut stormed the Confederate batteries at Vicksburg, Williams began the tremendous task of diverting the mighty current across the peninsula. Farragut’s bombardment by his entire fleet failed to silence Vicksburg’s cannon-guards, although the defenders likewise failed to stop the progress of the fleet. The Federal naval commander then determined to dash past the fortifications, trusting to the speed of his vessels and the stoutness of their armor to survive the tremendous cannonade that would fall upon his flotilla. Early in the morning of June 28th the thrilling race against death began, and after two hours of terrific bombardment aided by the mortar boats stationed on both banks, Farragut’s fleet with the exception of three vessels passed through the raging inferno to the waters above Vicksburg, with a loss of fifteen killed and thirty wounded. On the 1st of July Flag-Officer Davis with his river gunboats arrived from Memphis and joined Farragut.

Williams and his men, including one thousand negroes, labored like Titans to complete their canal, but a sudden rise of the river swept away the barriers with a terrific roar, and the days of herculean labor went for naught. Again Williams’ attempt to subdue the stronghold was abandoned, and he returned with his men when Farragut did, on July 24th, to Baton Rouge to meet death there on August 5th when General Breckinridge made a desperate but unsuccessful attempt to drive the Union forces from the Louisiana capital.

Farragut urged upon General Halleck the importance of occupying the city on the bluff with a portion of his army; but that general gave no heed; and while even then it was too late to secure the prize without a contest, it would have been easy in comparison to that which it required a year later.

In the mean time, the river steamers took an important part in the preliminary operations against the city. Davis remained at Memphis with his fleet for about three weeks after the occupation of that city on the 6th of June, meanwhile sending four gunboats and a transport up the White River, with the Forty-sixth Indiana regiment, under Colonel Fitch. The object of the expedition, undertaken at Halleck’s command, was to destroy Confederate batteries and to open communication with General Curtis, who was approaching from the west. It failed in the latter purpose but did some effective work with the Southern batteries along the way.

The one extraordinary incident of the expedition was the disabling of the Mound City, one of the ironclad gunboats, and the great loss of life that it occasioned. When near St. Charles the troops under Fitch were landed, and the Mound City moving up the river, was fired on by concealed batteries under the direction of Lieutenant Dunnington. A 32-pound shot struck the vessel, crashed through the side and passed through the steam-drum. The steam filled the vessel in an instant. Many of the men were so quickly enveloped in the scalding vapor that they had no chance to escape. Others leaped overboard, some being drowned and some rescued through the efforts of the Conestoga which was lying near. While straining every nerve to save their lives, the men had to endure a shower of bullets from Confederate sharpshooters on the river banks. Of the one hundred and seventy-five officers and men of the Mound City only twenty-five escaped death or injury in that fearful catastrophe. Meanwhile, Colonel Fitch with his land forces rushed upon the Confederate batteries and captured them. The unfortunate vessel was at length repaired and returned to service.