While Farragut was putting his fleet in thorough order for this adventure, looking after all needful arrangements with minute personal care, Banks concentrated all his disposable force at Baton Rouge. By the 7th of March, leaving T. W. Sherman to cover New Orleans and Weitzel to hold strongly La Fourche, Banks had a marching column, composed of Augur's, Emory's, and Grover's divisions, 15,000 strong. On the 9th of March tents were struck, to be pitched no more for five hard months, and the next morning the troops were ready, but repairs delayed the fleet, the last vessels of which did not reach Baton Rouge until about the 12th. On that day, for the first time, Banks reviewed his army, on the old battle-ground, in the presence of the admiral, his staff, and many officers of the fleet. The new regiments, with some exceptions, showed plainly the progress already attained under the energetic training and constant work of their officers. The degree of instruction and care then apparent forecast the value of their actual service. The 38th Massachusetts and 116th New York were specially commended in orders.
To hold Baton Rouge about 3,000 men were detached, under Chickering, including the 41st Massachusetts, 173d New York, 175th New York, 1st Indiana heavy artillery, 3d Louisiana native guards, Mack's battery, and Troop F of the Rhode Island cavalry.
All arrangements being concerted for the passage of the batteries on the evening of the 14th of March, Grover set out on the afternoon of the 13th, followed, at daybreak the next morning, by Emory, with Augur bringing up the rear. In the afternoon Grover went into camp, covering the intersection of the Bayou Sara road and the road that leads from it toward the river. Emory formed on his left, covering the branches of this road that lead to Springfield Landing and to Ross Landing, his main body supporting the centre at Alexander's plantation. Augur, on the right, held the cross-road that leads from the Bayou Sara road by Alexander's to the Clinton road at Vallandigham's. At two o'clock in the afternoon the signal officers opened communication from Springfield Landing with the fleet at anchor near the head of Prophet Island, and a strong detachment was posted near the landing to maintain the connection.