The terms of service of the older regiments enlisted in the early days of 1861 being about to expire, the government now offered a bounty and a furlough for thirty days to all veterans who should again enlist for three years or during the war; and in carrying out this plan Banks arranged to send home in each month, beginning with February, at least two regiments of re-enlisted veterans from each corps. Of the nineteen regiments and six batteries of the Nineteenth Corps raised in 1861, every one promptly embraced these terms. In some regiments nearly every man present re-enlisted. The 7th Vermont enrolled every survivor, save 59, of the original muster; in the 13th Connecticut out of 406 present 400 signed; the 26th Massachusetts returned 546. To make up, in part, for the temporary loss to be accounted for from this cause, the government sent down four fine regiments, well commanded, the 29th Maine, the 30th Maine, the 153d New York, and the 14th New Hampshire, and, these being assigned to the Nineteenth Corps, the first three joined the First division, but the 14th New Hampshire came too late for the campaign, and was assigned to temporary duty near New Orleans. About the same time Nields's 1st Delaware battery and Storer's 7th Massachusetts battery joined the corps. The idea of a foothold in Texas had been gradually swelling until at length it had attained the dimensions of an overland army of occupation. For this the nature of the region to be traversed, as well as the character of the enemy to be met, demanded a large mounted force. Therefore the government sent from Washington and from other Northern stations the 2d New York veteran cavalry, the 11th New York, the 18th New York, the 2d Maine, the 3d Rhode Island, the 12th Illinois, and the 3d Maryland, and from the West many horses. Banks also mounted seven more regiments of infantry, and having thus raised Lee's cavalry division, when all had joined, to nineteen regiments, they were finally organized in five brigades, with three batteries of horse artillery, namely, Duryea's, Rawles's, and Nims's. These three batteries were lost to the Nineteenth Corps, and with them four of the mounted infantry regiments, the 2d Louisiana, the 75th New York, the 8th New Hampshire, and the 31st Massachusetts; the last three only for a time. Returning from sick-leave, Emory relieved Weitzel in command of the First division on the 13th of December. Weitzel presently went North on special service and did not resume his command but was transferred in the spring to the Army of the James.