A series of military conflicts between the Ottoman Empire and various European states took place from the Late Middle Ages up through the early 20th century. The earliest conflicts began during the Byzantine–Ottoman wars, waged in Anatolia in the late 13th century before entering Europe in the mid-14th century with the Bulgarian–Ottoman wars. The mid-15th century saw the Serbian–Ottoman wars and the Albanian-Ottoman wars. Much of this period was characterized by the Ottoman expansion into the Balkans. The Ottoman Empire made further inroads into Central Europe in the 15th and 16th centuries, culminating in the peak of Ottoman territorial claims in Europe.
The Balkans and parts of this area may also be placed in Southeastern, Southern, Eastern Europe and Central Europe. The distinct identity and fragmentation of the Balkans owes much to its common and often turbulent history regarding centuries of Ottoman conquest and to its very mountainous geography.
The military history of Portugal is as long as the history of the country, from before the emergence of the independent Portuguese state.
The military history of Greece is the history of the wars and battles that took place in Greece, the Balkans, and the Greek colonies in the Mediterranean Sea and the Black Sea, respectively, since classical antiquity.
Tao is a historical Georgian district and part of historic Tao-Klarjeti region, today part of the Eastern Anatolia region of Turkey. Its name derives from the ancient proto-Georgian inhabitants of this area, known as Taochi.
The military history of Romania deals with conflicts spreading over a period of about 2500 years across the territory of modern Romania, the Balkan Peninsula and Eastern Europe and the role of the Romanian military in conflicts and peacekeeping worldwide.
The Revolutions of 1917–1923 were a revolutionary wave that included political unrest and armed revolts around the world inspired by the success of the Russian Revolution and the disorder created by the aftermath of World War I. The uprisings were mainly socialist or anti-colonial in nature. Most socialist revolts failed to create lasting socialist states. The revolutions had lasting effects in shaping the future European political landscape, with, for example, the collapse of the German Empire and the dissolution of Austria-Hungary.
