Up to that time Bonaparte had hoped to cajole the Porte into an attitude of neutrality, upon the plea that his quarrel was solely with the Mamelukes on account of injury done by them to French commerce. On the 11th of December he had sent to Constantinople a M. Beauchamp, recently consul at Muscat, with instructions how to act in the twofold contingency of war having been declared or not. At that time he expected that Talleyrand would be found in Constantinople as Ambassador of France.[233] The news by the Ragusan enlightened him as to the actual relations with Turkey; but the disquieting rumors before received, coinciding with his ultimate purpose to advance upon India through Syria, had already determined him to act as the military situation demanded.[234] He had learned that troops were assembling in Syria and in the island of Rhodes, and divined that he was threatened with a double invasion,—by the desert of Suez and by the Mediterranean Sea. True to his sound and invariable policy, he determined to use his central position to strike first one and then the other, and not passively to wait on the defensive until a simultaneous attack might compel him to divide his force. During the violent winter weather, which would last yet for six weeks or two months, landing on the Egyptian coast was thought impracticable.[235] For that period, probably for longer, he could count upon security on the side of the sea. He would improve the interval by invading Syria, driving back the enemy there, breaking up his army, and seizing his ports. Thus he would both shut the coast to the British cruisers off Alexandria, which drew supplies from thence, and make impossible any future invasion from the side of the desert. He counted also upon the moral effect which success in Syria would have upon the negotiations with the Porte, which he conceived to be in progress.[236]
The first essential point in the campaign was to possess El Arish, just occupied by the troops of Djezzar. General Reynier advanced against it with his division on the 5th of February, 1799. The Turks were by him routed and driven from the oasis, and the fort besieged. Bonaparte himself arrived on the 15th, and on the 20th the garrison capitulated. The corps destined for the expedition, numbering in all thirteen thousand men, having now assembled, the advance from El Arish began on the 22d. On the 25th Gaza was taken. On the 3d of March the army encamped before Jaffa, and on the 7th the place was carried by storm. A port, though a very poor one, was thus secured. The next day there entered, from Acre, a convoy of Turkish coasters laden with provisions and ammunition, which fell a welcome prize to the French, and was sent back to Hayfa, a small port seven miles south of Acre, for the use of the troops upon arrival. On the 12th of March the army resumed its march upon Acre, distant about sixty miles. On the 17th, at five in the afternoon, a detachment entered and held Hayfa, to provide a place of safety for the flotilla, which, coasting the beach, slowly followed the advance of the troops. From Hayfa Bonaparte could see the roadstead of Acre, and lying there two British ships-of-the-line, the "Tigre" and the "Theseus," both under the command of Sir Sidney Smith, the captain of the former; who, as ranking officer on the spot, represented the naval power of Great Britain, about again to foil the plans of the great French leader.