General Gourko, with a flying corps, then made a very hazardous but successful march across the Balkans by the Hainköi Pass, and advanced into Bulgaria along the Trudja Valley as far as Eski Zagra. Thence, turning back, he attacked the more important Shipka Pass from the south, and defeated a Turkish force in occupation of it. Meanwhile, early in July, the main Russian army from Tirnovo came in contact at Plevna, twenty miles south of the Danube, with a Turkish army of fifty thousand men under Osman Pasha, who had been sent in relief of Nicopolis, but was too late for the purpose.
Plevna was not a fortress. It was a strong natural position, where the Turks entrenched their army behind earthworks and redoubts with great engineering skill, and where they maintained an obstinate and memorable defence for nearly five months, the most striking incident of the campaign of 1877. Three unsuccessful assaults were made by the Russians, assisted by a Roumanian army, in which great losses were incurred. Thereupon, by the advice of General Todleben, the hero of the defence of Sebastopol in the Crimean War, the attempt to take these works at Plevna by assault was given up, and it was subjected to a close investment. The occupation of the Shipka Pass by Gourko prevented the advance of a Turkish army in relief of Plevna, in spite of successive attacks by the Turkish army under Suleiman Pasha. As a result, after five months of heroic resistance, Osman Pasha found himself in great straits for want of food for his army. He determined to make a great effort to break through the lines of the investing army. The sortie failed, and Osman and his whole remaining army of thirty-two thousand men were compelled to surrender on January 9, 1878. This had the effect of releasing the Russian army in front of Plevna. General Gourko and the main part of the Russian army thereupon marched to Sofia. General Skobeleff, in command of another army, determined to force his way across the Balkan range. An army of ninety thousand Turks under another Pasha was stationed at the southern end of the Shipka Pass and barred his way. Directing a part of his army to make a feint attack along the Shipka Pass, Skobeleff led the remainder by two sheep tracks distant about six miles from the pass, and crossing the mountains, was able to attack the enemy on the flank at Shenova. The Turks were defeated and their whole army was compelled to surrender. By this brilliant manœuvre of Skobeleff, the Grand Duke Nicholas, in nominal command of the whole Russian army, was able to advance without further opposition to Adrianople. He took possession of it on January 28th. Meanwhile the Turks met with further defeats from the Serbians and Montenegrins. The former captured the important town of Nisch. The latter captured Spizza, in the bay of Antivari, and Dulcigno, in the Adriatic.
In Asia the Turks were no more fortunate than in Europe. Their army under Muktar Pasha was little inferior in numbers to that of the Russians, but it was divided between Kars, Ardahan, and Erzerum. The Russians in the course of the campaign of 1877 succeeded in successively capturing these important fortresses and in getting possession of nearly the whole of the districts inhabited by Armenians.
By the middle of January 1878 the resistance of the Turks was practically at an end in both continents. They were compelled to sue for peace and to appeal for the mediation of the other Powers of Europe. On January 31st an armistice was agreed on.
The capture of Adrianople and the fact that there was no Turkish army capable of resisting the further advance of the Russians to Constantinople caused great alarm to the British Government. Opinion in England, which had not supported Lord Beaconsfield in his desire to renew the policy of the Crimean War, and to assist the Turks against the invasion of Bulgaria by the Russians, now veered round, at least among the wealthier and a large section of the middle class, and declared itself vehemently opposed to the occupation of Constantinople, which appeared to be imminent, even if it should be only of a temporary character.
The British fleet at Besika Bay was ordered to enter the Dardanelles. The House of Commons was asked to vote six millions for war purposes. Every preparation was made for war. Russia replied to these demonstrations by advancing its army nearer to Constantinople. The headquarters of the Grand Duke Nicholas were established at San Stefano, a village on the shore of the Marmora, within sight of Constantinople. A portion of the British fleet then took up a position near to Prince’s Island, also within sight of the capital. The position between the two countries, England and Russia, was therefore most critical.
Meanwhile negotiations took place directly between Russia and the Porte. Terms of peace were offered and agreed to, and on March 3, 1878, a treaty was signed between the two Powers at San Stefano. It was in accord with the promises which had been made to the British Government by the Czar. Constantinople, the province of Thrace, and Adrianople were left in possession of the Turks, and the capital was not even to be temporarily occupied by the Russian army. Bulgaria was not to become a Russian province or even an independent State. But a great Bulgaria from the Danube southward, with frontiers on the Black Sea and the Ægean Sea, and including the greater part of Thrace, was constituted as an autonomous State, subject to the nominal suzerainty of the Sultan, under a prince to be elected by its people and approved by Russia. As thus constituted, it would cut off the Porte from direct junction and communication by land with its remaining possessions in the Balkan peninsula, such as Macedonia, Epirus, and Albania. Serbia and Montenegro were to be greatly enlarged and both were to be independent States. Bosnia and Herzegovina were to be endowed with autonomous institutions while remaining subject to the Porte. Reformed administration was to be secured for the remaining Balkan provinces. No extension was conceded to Greece, but Thessaly, Epirus, and Crete were included in the provision of reformed administration. The Roumanians were very shabbily treated after the valuable assistance they had rendered to the Russian army. The part of Bessarabia, inhabited largely by Roumanians, which had been taken from Russia by the treaty of Paris and added to Moldavia, was to be restored to the Czar, together with a small strip which brought Russia up to the Danube as a riverain State. In exchange, Roumania was to be content with the barren Dobrudscha, sparsely inhabited by Bulgarians and Turks. Roumania was to be an independent State. In Asia, Kars, Ardahan, Bayezid, and Batoum, and their districts were to be ceded to Russia. Erzerum was to be restored to Turkey. An indemnity for the war of twelve millions sterling was to be paid by Turkey.
The publication of these terms did not allay the apprehensions of the British Government. They were regarded, in the first instance, as meaning the complete dismemberment of Turkey in Europe. Lord Beaconsfield and the Turkophil members of the Government believed that a great Bulgaria would be completely under the influence of Russia, and would be used as a stepping-stone for the ultimate acquisition of Constantinople by that Power. They could not understand, what was often insisted upon by Mr. Gladstone in his speeches, that the best barrier against the advance of Russia, in the Balkan peninsula, would be a self-governing, contented, and prosperous State, and that the larger it was the better it would serve that purpose. The Government, under these misapprehensions, determined to resist the creation of a big Bulgaria, even at the risk of war with Russia. They maintained that the treaty of San Stefano was completely at variance with the treaty of Paris of 1856, and must be revised by a new Congress of the great Powers of Europe.
The Russian Government would not agree to submit the whole treaty to a Congress, but only some parts of it. A collision between Russia and England seemed to be imminent. War preparations were continued by the latter, and Indian troops were sent to Malta. Lord Derby, the Foreign Minister, and Lord Carnarvon, the Colonial Secretary, who were opposed to war, resigned, and the war party in the Cabinet prevailed. But the Czar was very averse to war, whatever might be the wishes of his generals at the front before Constantinople. At the last moment terms of reference to a Congress were agreed upon between the two Governments, and war was averted. By an agreement which was intended to be secret, but which was divulged to the Press in England by an unscrupulous employé at the Foreign Office, the British Government promised to support, at the Congress, the main clauses of the treaty of San Stefano, subject to a concession, on the part of Russia, as to Bulgaria. Under this agreement, the intended big Bulgaria was divided into three parts. That between the Danube and the Balkan range was to be dealt with as proposed in the San Stefano treaty. It was to be an autonomous State under the suzerainty of the Sultan, with a prince elected by its people. A second part of it, immediately south of the Balkan range, to be called Eastern Roumelia, was to be an autonomous province more directly under the control of the Porte. A third, the part bordering on the Ægean Sea and containing a mixed population of Bulgarians, Serbians, Greeks, and (in parts) Moslems, was to be restored to the Porte subject to conditions for better administration equally with other Turkish provinces in Europe. This part has since been generally spoken of as Macedonia.
The Congress of the Powers met at Berlin on June 13, 1878, under the presidency of Prince Bismarck. It was the most important gathering of the kind since the Congress of Vienna in 1815. The Great Powers were represented by their leading statesmen. England, by Lord Beaconsfield and Lord Salisbury; Russia, by Prince Gortchakoff and Count Schouvaloff; France, by its Prime Minister, Waddington; Italy, by Count Corti, its Foreign Minister; Austria, by Count Andrassy. The Porte, apparently, was unable to find a competent Turk for the purpose. It was represented by Karatheodori, a Greek, and by Mehemet Ali, a renegade German. Germany, it need not be said, was represented by Bismarck, who acted as the ‘honest broker.’ Although apparently invested with unlimited authority to deal with all questions arising out of the treaty of San Stefano, the Congress found that its hands were practically tied behind its back by the agreement between England and Russia. It had no other option than to cut down the big Bulgaria under the tripartite scheme already described, which was the essence of the Anglo-Russian agreement. As regards the artificially created province of Eastern Roumelia, Lord Beaconsfield, who throughout the proceedings of the Congress championed the Turkish cause, insisted that the Porte was to have the right to maintain garrisons in its frontier fortresses. He threatened to break up the Congress if this was not conceded. Russia, though strongly opposed to this, ultimately gave way. This was a triumph for Beaconsfield, the value of which we can now appreciate, with the knowledge that no advantage was ever taken by the Porte of this permission to garrison Eastern Roumelia.