War in the East

When Russia declared war on the Ottoman Empire in April 1877, it was the fifth time during the nineteenth century that hostilities had broken out between the two empires. On this occasion the other Great Powers had done all they could to prevent it, although public opinion in the West had been shocked by Turkey's brutal repression of the Bulgarian uprising. The war was to be fought in two distinct theaters. In Europe, as on previous occasions, the Russian objective was to cross first the Danube and then the formidable Balkan Mountains before striking for Constantinople. In Asia, over territory also contested many times before, the Russians aimed to seize Kars and then Erzerum.

At first all went well for the invaders, the Turks making no serious attempt to hold the line of the Danube, while a thrust south by General Gourko succeeded in crossing the Balkans by a pass not previously considered practicable.