From the moment that Buonaparte conceived the idea of invading Egypt, the destruction of the power of the Mamelukes must have been determined upon as his first object; and he had no sooner taken Alexandria than he announced his purpose. He sent forth a proclamation,[375] in which he professed his respect for God, the Prophet, and the Koran; his friendship for the Sublime Porte, of which he affirmed the French to be the faithful allies; and his determination to make war upon the Mamelukes. He commanded that the prayers should be continued in the mosques as usual, with some slight modifications, and that all true Moslems should exclaim, "Glory to the Sultan, and to the French army, his allies!--Accursed be the Mamelukes, and good fortune to the land of Egypt!"[376] [Sidenote: MARCH TO CAIRO.] Upon the 7th of July, the army marched from Alexandria against the Mamelukes. Their course was up the Nile, and a small flotilla of gun-boats ascended the river to protect their right flank, while the infantry traversed a desert of burning sands, at a distance from the stream, and without a drop of water to relieve their tormenting thirst. The army of Italy, accustomed to the enjoyments of that delicious country, were astonished at the desolation they saw around them. "Is this," they said, "the country in which we are to receive our farms of seven acres each? The general might have allowed us to take as much as we chose--no one would have abused the privilege." Their officers, too, expressed horror and disgust; and even generals of such celebrity as Murat and Lannes threw their hats on the sand, and trode on their cockades. It required all Buonaparte's authority to maintain order, so much were the French disgusted with the commencement of the expedition.[377] To add to their embarrassment, the enemy began to appear around them. Mamelukes and Arabs, concealed behind the hillocks of sand, interrupted their march at every opportunity, and woe to the soldier who straggled from the ranks, were it but fifty yards! Some of these horsemen were sure to dash at him, slay him on the spot, and make off before a musket could be discharged at them. At length, however, the audacity of these incursions was checked by a skirmish of some little importance near a place called Chebreis, in which the French asserted their military superiority.[378] An encounter also took place on the river, between the French flotilla and a number of armed vessels belonging to the Mamelukes. Victory first inclined to the latter, but at length determined in favour of the French, who took, however, only a single galliot.