On April 26, 1828, Russia declared war against Turkey. England and France found themselves in a position when they could not object, for the Porte still refused their demands as regards Greece. They had joined with Russia in destroying the Turkish fleet. They were now compelled to stand by while the Russians invaded Turkey. The position, and still more the results of the war, showed what a grave error Mahmoud committed when he refused to agree to the scheme of the allied Powers for granting autonomy to Greece under the suzerainty of Turkey. If he had accepted, his fleet would have been intact. England and France would have been in a position to object to Russia’s schemes. As it was, Greece secured an absolute independence, and Wallachia, Moldavia, and Serbia were soon, by the victories of Russia, to secure the status of complete autonomy which the Sultan had refused to Greece. The Emperor Nicholas, in nominal command of his army, crossed the Pruth on May 7, 1828. His force consisted of not more than sixty-five thousand men, a surprisingly small number for the greatest military Power in Europe to put into the field. It was necessary, however, to keep a large army in Poland, where an outbreak was expected. Another army was stationed in the Ukraine to watch Austria, who regarded the Russian attack on Turkey with suspicion and malevolence; and a fourth army of thirty thousand men, under General Paskiewich, invaded Asia Minor from the Caucasus. With the main army it was hoped to cross the Balkans and to menace Constantinople. The Turks offered no resistance in Moldavia and Wallachia. But it was not till June 8th that the Russians were able to effect a crossing over the Danube. The Sultan, on his part, commenced the campaign under great disadvantages. His old army of Janissaries had recently been destroyed. The new army, equipped and drilled in the fashion of European armies, was very raw and ill-trained. It consisted of very young men, who were recruited with difficulty, often by compulsion, for the new service was very unpopular, and the older men could not be induced to join. It did not count more than forty-five thousand men, exclusive of the artillery. It was supplemented by irregulars from Asia, and the total force under arms was estimated at one hundred and eighty thousand men, of whom, after providing for the defence of Constantinople and the Dardanelles, for a reserve at Adrianople and for other demands on the Empire in Europe and Asia, there remained only fifty thousand men to oppose the Russians in Bulgaria, and to provide garrisons for the fortresses on the Danube and for Schumla and Varna. These garrisons, however, were supported by the armed Turkish inhabitants of the towns, who could be relied on for a vigorous resistance. The Turks were under the further disadvantage that the greater part of their fleet had been destroyed at Navarino. The Russians were, in consequence, completely masters in the Black Sea.