Walker retreated on Natchitoches, accompanied by Gray's brigade of Mouton's division from the Huffpower. Taylor, quitting his headquarters at Alexandria, called in Polignac's brigade from the line of the Tensas and concentrated his force at Carroll Jones's plantation, on the road between Opelousas and Fort Jesup, distant forty-six miles in a south-southeasterly direction from Natchitoches, twelve miles south from Cotile, and twenty miles southwesterly from Alexandria. Here he was in a good position for receiving supplies and reinforcements, for covering Natchitoches, and for observing any approach of the Union forces either from Opelousas or from Alexandria.
Meanwhile Banks had called in from Texas the divisions of Cameron and Ransom of the Thirteenth Corps and sent them to join Franklin on the lower Teche. The command of this detachment being given to Ransom, his division fell to Landram. Lee's cavalry was given the same direction, excepting Fonda's brigade, which stayed at Port Hudson. His last brigade, that of Dudley, marched from Donaldsonville on the 6th of March, crossed Berwick Bay on the 9th, and arrived at the cavalry camp near Franklin on the 10th. Cameron's wagons reached him at Berwick on the 12th, and he marched to join the army in the field on the morning of the 13th. On the evening of the same day Lee led the advance of the army from the town of Franklin, but, his column being quite nine miles long, it was not until the following morning that his rear-guard filed into the road. On the morning of the 15th of March he was followed by Emory and Ransom. Lee arrived at Alexandria on the 19th, Emory on the 25th, and Ransom on the 26th. The troops were, with some exceptions among the newly mounted regiments, in admirable condition, all were in fine spirits, and the long march of one hundred and sixty miles was well ordered and well executed, without confusion, haste, or delay, so that when, with closed ranks and bands playing, and with measured tread and all intervals observed, the column entered Alexandria, the appearance of the men drew exclamations of admiration even from critics the least friendly.
When the news of A. J. Smith's and Porter's arrival in the Red River and of the capture of Fort De Russy reached New Orleans on the 16th of March, it found Banks himself preparing to set out on the following morning to join Franklin near New Iberia. He at once despatched Stone to Alexandria by the river, and following him on the 23d on the transport steamer Black Hawk, arrived at Alexandria on the 24th, and took command of the combined forces of Franklin and A. J. Smith.
Grover, as has been said, was to have moved with Franklin, or close upon his heels, but the 7th of March had come before the first preparatory orders were given for the movement of Sharpe's brigade from Baton Rouge, and not until the 10th was Grover told to concentrate his division at Thibodeaux. His route was now changed to the river. Accordingly Sharpe's brigade debarked at Alexandria on the 26th, and the Second brigade under Molineux on the 28th, but Nickerson stayed for a fortnight longer at Carrollton.
Vincent, who with the 2d Louisiana cavalry had been watching and reporting Lee's movement and regularly falling back before his advance, joined Taylor at Carroll Jones's on the 19th. Then Taylor sent Vincent with his regiment and Edgar's battery to watch the crossing of Bayou Jean de Jean and to hold the road by which Banks was expected to advance on Shreveport. Vincent encamped on the high ground known as Henderson's Hill, commanding the junction of the Bayou Rapides and Cotile twenty-three miles above Alexandria. Here he was in the air, and A. J. Smith, realizing the importance of seizing the passage without loss of time, at once proceeded to dislodge him. Accordingly, on the 21st of March he sent out Mower with his two divisions of the Sixteenth Corps and Lucas's brigade of cavalry. Mower made his dispositions with great skill and promptness, and that night, during a heavy storm of rain and hail, completely surprised Vincent's camp and captured the whole regiment bodily, together with four guns of Edgar's battery. A few of Vincent's men managed to escape in the darkness and confusion, but about 250 were brought in and with them 200 horses. This was a heavy blow to Taylor, since it deprived him of the only cavalry he had with him and thus of the means of scouting until Green should come from Texas. Mower returned to Alexandria on the 22d, and Taylor, probably unwilling to risk a surprise in his exposed position, withdrew about thirty miles to Kisatchie, still covering the Fort Jesup road; but a week later he sent his cavalry northward twenty-six miles to Natchitoches and with his infantry retired to Pleasant Hill.
Banks has been blamed for his delay in meeting A. J. Smith and Porter at Alexandria, yet, whatever may be the theoretical merits of such a criticism, in fact no loss of time that occurred up to the moment of quitting Alexandria had the least influence on the course of the campaign, for even after the concentration was completed the river, though very slowly rising by inches, was still so low that the gunboats were unable to pass the rapids. The Eastport hung nearly three days on the rocks in imminent peril, and at last had to be hauled off by main force, a whole brigade swaying on her hawsers to the rhythm of the field music. This was on the 26th of March, and the Eastport was the first of the gunboats to pass the rapids, the Admiral being naturally unwilling to expose the boats of lighter draught as well as of lighter armament to the risk of capture if sent up alone. The hospital steamer Woodford, which was the first boat to follow the Eastport, was wrecked in the attempt. The next five boats took three days to pass, nor was it until the 3d of April that the last of the twelve gunboats and thirty transports, selected to accompany the expedition to Shreveport, floated in safety above the obstructions. Several of the transports drew too much water to permit them to pass the rapids; these, therefore, stayed below, and with them the remaining seven gunboats.
And now occurred the first important departure from the original plan of operations. The season of high water had been looked forward to as insuring constant communication along the whole length of the Red River as far as the fleet should be able to ascend. But the Red is a treacherous river at best, and this year it was at its worst. There was to be no March rise worth speaking about. Thus the rapids presented an obstacle, impassable, or only to be passed with difficulty; the bare rocks divided the fleet in twain, the only communication was overland by the road around the falls. The supplies had to be landed at Alexandria, loaded into wagons, hauled around, and re-shipped, and this made it necessary to establish depots in the town as well as above the falls, and to leave behind Grover's division, 4,000 strong, to protect the stores and the carry. At the same time McPherson recalled Ellet's marine brigade to Vicksburg, and thus the expedition lost a second detachment of 3,000 men; but this loss was partly made up by Dickey's brigade of colored troops, 1,500 strong, which joined the column from the garrison of Port Hudson. Withal the force was ample, for at the end of March there were 31,000 officers and men for duty, including about 4,800 under Ransom, 6,600 under Emory, 9,000 under A. J. Smith, and Lee's cavalry, 4,600. Here was a superb fighting column of 25,000 officers and men of all arms, with ninety guns. This more than met the calculations of Banks and Sherman on which the campaign was undertaken. In the three columns there were to be 40,000 men; of these, Sherman was to furnish 10,000, Banks 15,000, and Steele 15,000.
Steele had already sent word that he could not be counted upon for more than 7,000, all told. He had expected to march from Little Rock by the 14th of March on Arkadelphia, there to be joined by Thayer moving at the same time from Fort Smith. Thayer marched on the 21st with 4,000 effectives and 14 guns, Steele on the 23d with 7,500 effectives and 16 guns; besides these, he left Clayton with 1,600 men and 11 guns to hold Pine Bluff.
We have seen how, in one movement, three divergent ideas were being carried out without either having been distinctly decided on: a foothold in Texas, an overland occupation in force, and a swift raid by the river. To these there was now to be added a fourth idea, in itself sound, yet fatally inconsistent with the others.
On the 27th of March, before setting out from Alexandria, Banks received, by special messenger, the orders of Lieutenant-General Grant, dated the 15th of March, on taking command of the armies of the United States. For the first time during the war, all the armies were to move as one, with a single purpose, ruled by a single will; along the whole line, from the Mississippi to the Atlantic, a combined movement was to take place early in May, and in this the entire effective force of the Department of the Gulf was to take part. A. J. Smith was to join the Army of the Tennessee for the Atlanta campaign, and Banks was to go against Mobile. Sherman had lent A. J. Smith to Banks for thirty days. This limit Grant was willing to extend by ten or fifteen days, but if Shreveport were not to be taken by that time—that is, by the 25th of April at the very latest,—then Banks was to send A. J. Smith's detachment back to Vicksburg in season to arrive there at the date originally named—that is, by the 10th of April,—even if this should lead to the abandonment of the expedition. The orders for the expedition given by Halleck, while occupying nominally the supreme command that had now in truth fallen into the strong hand of Grant, were not revoked; the expedition was to go on; only, to make sure that it should not be gone too long, it was to be put in irons.