The artillery of the corps was redistributed to correspond with the new organization, and the cavalry was concentrated at Baton Rouge, Plaquemine, Thibodeaux, and New Orleans, with orders that all details for orderly duty and the like were to be furnished from a single battalion, the 14th New York, attached to the defences of New Orleans. Weitzel's division, except his old brigade under Merritt, took post at Baton Rouge, where also Emory's division was encamped, successively commanded by Nickerson and McMillan, while Grover's division, assigned to the defence of New Orleans, was separated, Birge occupying La Fourche, with headquarters at Thibodeaux, and Cahill forming the garrison of New Orleans. At Port Hudson, after the departure of the nine-months' troops, Andrews had the 6th Michigan newly converted into the 1st Michigan heavy artillery, ten troops of the 3d Massachusetts cavalry, Rawles's, Holcomb's, and Barnes's batteries; and besides these the infantry of the Corps d'Afrique, then in process of organization, including, at the end of August, the old 1st and 3d regiments and the five regiments of Ullmann's brigade--the 6th to the 10th. The return of the post for the 31st of August accounts for an effective force of 5,427; of these 1,815 belonged to the white troops and 3,612 to the colored regiments. The whole number of infantry regiments of the Corps d'Afrique, then authorized, was nineteen, of which only the first four were completed. Besides these there were two regiments of engineers, the 1st full, the 2d about half full, and three companies of heavy artillery, making the whole muster of colored troops in the department about 10,000. Towards the end of September the regiments of infantry numbered twenty, with ranks fairly filled. The Corps d'Afrique was then organized in two divisions of two brigades each, Ullmann commanding the First division and the senior colonel the Second. Rawles's battery was assigned to the First division and Holcomb's to the Second. This division, however, never became much more than a skeleton, its First brigade being from the first detached by regiments for garrison duty in the various fortifications.