Europe was now engaged in a death struggle with her great foe who was everywhere victorious. After the battle of Hohenlinden on December 3rd, 1800, Austria consented to peace with France, and England was left without an ally. Paul, the half-mad emperor of Russia, had quarrelled with her, partly on account of the ill-starred expedition to Holland, partly because she would not give up to him the island of Malta. Bonaparte, whose astute mind saw where advantage was to be gained, promoted the quarrel, and in order to gain the czar's friendship collected all the Russian prisoners in France, clothed them, supplied them with muskets and sent them back to Russia. This had the desired effect, and Paul, from an enemy, became for the time a devoted friend to France. As a first proof of his friendship he seized the English vessels in his harbours, his excuse being that England had sent a fleet to Copenhagen to oblige Denmark to acknowledge the navigation laws and the right of search of neutral vessels. In December, 1800, the Russian emperor {24} concluded a coalition or alliance with Denmark and Sweden, to which Prussia afterwards acceded. In consequence of this step, England put an embargo on the vessels of the Baltic powers. Bonaparte now had visions of a greater empire beyond Europe, and secretly concerted with Russia for an expedition to India. In the meantime, he hoped by commercial embarrassment, by the weight of arms, and by the skilful management of the powers of Europe, to overthrow England, his last and greatest enemy. He had reckoned without Nelson. In order to meet the dangers that threatened her on all sides, Great Britain brought together the most powerful fleet she could collect in the northern waters. There were eighteen sail of the line, besides frigates, bombs, fire ships, etc., amounting in all to fifty-three sail. On February 17th, 1801, Nelson received orders to place himself under the command of Sir Hyde Parker, and to prepare for an expedition against the combined Danish and Russian fleets in the Baltic. It was Isaac Brock's good fortune to assist in this memorable expedition, and he was placed second in command of the land forces engaged.