With the exception of the levies raised by its commander, the Department of the Gulf had so far received no access of strength from any quarter. From the North had come hardly a recruit. In the intense heat and among the poisonous swamps the effective strength melted away day by day. Thus the numbers present fell 3,795 during the month of July; in October, when the sickly season had done its worst, the wastage reached a total of 5,390. At the time of the battle of Baton Rouge, Butler's effective force can hardly have exceeded 7,000. When his strength was the greatest it probably did not exceed, if indeed it reached, the number of 13,000 effective. The condition of affairs was therefore such that Butler found himself with an army barely sufficient for the secure defence of the vast territory committed to his care, and for any offensive operation absolutely powerless. To hold what had been gained it was practically necessary to sit still; and to sit still then, as always in all wars, was to invite attack. These things Butler did not fail to represent to the government, and to repeat. At last, about the middle of November, he received a few encouraging words from Halleck, dated the 3d of that month, in which he was assured that the "delay in sending reinforcements has not been the fault of the War Department. It is hoped that some will be ready to start as soon as the November elections are over. Brigadier-generals will be sent with these reinforcements." With them was to be a major-general, the new commander of the department; but this Halleck did not say. CHAPTER V. BANKS IN COMMAND. When the campaigns of 1862 were drawing to an end, the government changed all the commanders and turned to the consideration of new plans. With President Lincoln, as we have seen, the opening of the Mississippi had long been a favored scheme. His early experience had rendered him familiar with the waters, the shores, and the vast traffic of the great river, and had brought home to him the common interests and the mutual dependence of the farmers, the traders, the miners, and the manufacturers of the States bordering upon the upper Mississippi and the Ohio on the one hand, and of the merchants and planters of the Gulf on the other. Thus he was fully prepared to enter warmly into the idea that had taken possession of the minds and hearts of the people of the Northwest. From a vague longing this idea had now grown into a deep and settled sentiment. Indeed in all the West the opening of the Mississippi played a part that can only be realized by comparing it with the prevailing sentiment of the East, so early, so long, so loudly expressed in the cry, "On to Richmond!"