As for the army, it had gained some facility of movement, some knowledge of its deficiencies, and some information of great future value as to the topography of the unknown country about Port Hudson; more than this could hardly have been expected. Indeed, the sole object of the presence of the army was defeated by the movement of the fleet so many hours before the time agreed upon. This object was to make a diversion that might attract the enemy's attention and thus tend to reduce the fire of musketry on the exposed decks of the fleet, and to draw off or hold off the fire of the field-pieces that might otherwise be massed on the river front. The disparity between the relative strength of Banks's army and that of the garrison was too well known to justify the thought of an actual attack upon the works.
Such, however, was not the opinion of the government, which to the last seems to have taken for granted that all that was needed to insure the surrender of Port Hudson was a desire to attack it. Even after the surrender, Halleck, in his annual report for 1863, speaking of the position of affairs in March, said: "Had our land forces invested Port Hudson at this time, it could have been easily reduced, as its garrison was weak . . . but the strength of the place was not then known." In truth, the place was never so strong, before or after, as at this time; nor is it often in war that the information tallies so nearly with the fact. The effective strength of the garrison was more than 16,000. Gardner's monthly report accounts for 1,366 officers and 14,921 men present for duty, together 16,287 out of a total present of 20,388. Besides the twenty-two heavy guns in position, he had thirteen light batteries.
Morning found the army alone and in a bad position, either for attack or defence. Nothing was to be gained by staying there, and much was to be risked. As soon, therefore, as word came through the ever-active and adventurous signal-officers that all was well with what remained of the fleet, Banks once more took up the line of march for Baton Rouge, and went into bivouac in great discomfort on the soggy borders of the Bayou Montesanto, about eight miles north of the town.
