- The Russo-Turkish War -
The Russian and Ottoman empires fought quite a number of conflicts during the 18th and 19th centuries. However, the Russo-Turkish War of 1877-1878 was an attempt by Russia to take advantage of changing European geopolitical conditions. During the countries' previous major conflict, the Crimean War, the "concert" or coalition of European great powers which had prevented major war and upheld the status quo since the 1815 Congress of Vienna had been shattered. Moreover, although Prussia (and then unified Germany) was on the rise to the west, to Russia's south, the once-powerful Ottoman Empire was in terminal decline. As revolts against Turkish rule occurred in the Balkans, the Russian government sensed an opportunity to seize the conflict-prone region for itself.
Neither the Russian nor the Turkish military was a leading armed force in 1877, and the result was a war of frequent strategic and tactical blunders on both sides. Ultimately, however, the Russian forces generally prevailed. In early 1878, it even seemed that the Russians would march on the Turkish capital of Constantinople (now Istanbul)