So far all had gone well and easily; the enemy had offered little resistance and the United States flag had been raised in Texas. Now, however, Banks found powerful works confronting him at the mouth of the Brazos River and at Galveston. To reduce these he felt it necessary to turn into the interior and come upon them in the rear, but the forces of the enemy were such as to deter him from the attempt unless he could receive reinforcements. Halleck had looked with evident distrust upon this whole movement, by which a small force had been separated from the main body by the width of Louisiana and Texas, with the enemy's army between the two, and the reinforcements were not forthcoming; but recurring to his favorite plan of operating by the Red River and Shreveport, without giving positive orders to adopt it, the inducement was held out that, if that line were taken up, Steele's army in Arkansas and such forces as Sherman could detach should be directed to the same object. The co-operation of the Mississippi squadron was also promised.
It was necessary, however, that this proposed expedition should be taken in hand and carried through promptly, because both Banks's own troops and Sherman's would be needed in time to take part in the spring and summer campaigns east of the Mississippi; while at the same time the movement could not begin until the Red River should rise enough to permit the passage of the gunboats and heavy transports over the falls above Alexandria, which would not ordinarily be before the month of March.
The two months of January and February were spent in inactivity in the Department of the Gulf, but frequent communications were held between the three generals whose forces were to take part in the movement. On the 1st of March Sherman came to New Orleans to confer with Banks, and it was then arranged that he should send 10,000 men under a good commander, who should meet Porter at the mouth of the Red River, ascend the Black, and strike a hard blow at Harrisonburg, if possible, and at all events be at Alexandria on the 17th of March. Banks on his part was to reach there at the same date, marching his army from Franklin by way of Opelousas, and to conduct his movement on Shreveport with such celerity as to enable the detachment from Sherman's corps to get back to the Mississippi in thirty days from the time they entered the Red River. General Steele was directed by Grant to move toward Shreveport from Little Rock, a step to which he was averse, and his movements seem to have had little, if any, effect upon the fortunes of the expedition. Having finished his business, Sherman went back at once, resisting the urgent invitation of General Banks, whose military duties seem to have been somewhat hampered by civil calls, to remain over the 4th of March and participate in the inauguration of a civil government for Louisiana, in which the Anvil Chorus was to be played by all the bands in the Army of the Gulf, the church bells rung, and cannons fired by electricity.