Around the camp-fires there was, during the remaining months of winter, a passive endurance, mingled with some murmuring about the horrors caused by one man's ambition. The Emperor set his men an example of uncomplaining cheerfulness. His health continued as exuberant as it had been for the year past, and his activity, though no longer feverish, lost nothing of its intensity. Savary thought he outdid himself, accomplishing in one month what elsewhere would have been, even for him, the work of three. Mme. de Remusat remembered to have heard him say that he felt better during those months than ever before or after. This vigor of body, combined with the same iron determination as of old, did indeed work miracles, and this in spite of the fact that his indefatigable secretary, Maret, was long at the point of death. To remedy the blunder of having left Dantzic behind in the hands of the Prussians, Lefebvre was despatched with his new corps to beleaguer it. Savary drove the Russians from the Narew and out of Ostrolenka; Mortier threatened Stralsund and stopped the Swedes, who, as members of the coalition, were finally about to take an active share in the fighting. To strengthen the weakened ranks of the invaders, new levies were ordered in both Switzerland and Poland, while at the same time some of the soldiers occupying Silesia and besieging her fortresses were called in. Both Neisse and Glatz were still beset by French troops, but the siege of Kolberg was abandoned, and still further reinforcements thus became available. In the daily skirmishes which occurred at the outposts the fighting was sharp; but the Cossacks were as saucy as ever, and the French light horse could bring in little news. Meantime Russia's difficulties, of which Napoleon remained ignorant, kept her from reinforcing her army to the proper size. Her credit was so low that she could raise no money on her own account, and when she applied to England for a subsidy, it was refused. The Czar was consequently furious, and strained Russia's resources to the utmost; but he could give Bennigsen no more than enough funds and men to restore his original strength.