Władysław III of Poland, also known as Ladislaus of Varna, was King of Poland and Supreme Duke of the Grand Duchy of Lithuania from 1434 as well as King of Hungary and Croatia from 1440 until his death at the Battle of Varna. He was the eldest son of Władysław II Jagiełło (Jogaila) and the Lithuanian noblewoman Sophia of Halshany.
Moldavia is a historical region and former principality in Central and Eastern Europe, corresponding to the territory between the Eastern Carpathians and the Dniester River. An initially independent and later autonomous state, it existed from the 14th century to 1859, when it united with Wallachia as the basis of the modern Romanian state; at various times, Moldavia included the regions of Bessarabia, all of Bukovina and Hertsa. The region of Pokuttya was also part of it for a period of time.
The Battle of Varna took place on 10 November 1444 near Varna in eastern Bulgaria. The Ottoman army under Sultan Murad II defeated the Crusaders commanded by King Władysław III of Poland and Hungary, John Hunyadi and Mircea II of Wallachia. It was the final battle of the unsuccessful Crusade of Varna, a last-ditch effort to prevent further Ottoman expansion into the Balkans.
Stephen III, commonly known as Stephen the Great ; died on 2 July 1504), was Voivode of Moldavia from 1457 to 1504. He was the son of and co-ruler with Bogdan II, who was murdered in 1451 in a conspiracy organized by his brother and Stephen's uncle Peter III Aaron, who took the throne. Stephen fled to Hungary, and later to Wallachia; with the support of Vlad III Țepeș, Voivode of Wallachia, he returned to Moldavia, forcing Aaron to seek refuge in Poland in the summer of 1457. Teoctist I, Metropolitan of Moldavia, anointed Stephen prince. He attacked Poland and prevented Casimir IV Jagiellon, King of Poland, from supporting Peter Aaron, but eventually acknowledged Casimir's suzerainty in 1459.
Vlad II, also known as Vlad Dracul or Vlad the Dragon, was Voivode of Wallachia from 1436 to 1442, and again from 1443 to 1447. He is internationally known as the father of Vlad the Impaler, or Dracula. Born an illegitimate son of Mircea I of Wallachia, he spent his youth at the court of Sigismund of Luxembourg, who made him a member of the Order of the Dragon in 1431. Sigismund also recognized him as the lawful Voivode of Wallachia, allowing him to settle in nearby Transylvania. Vlad could not assert his claim during the life of his half-brother, Alexander I Aldea, who acknowledged the suzerainty of the Ottoman Sultan, Murad II.
Zawisza the Black of Garbów, of Sulima coat of arms, was a Polish knight and nobleman who served as a commander and diplomat under Polish king Władysław II Jagiełło and Hungarian-Bohemian king Sigismund of Luxembourg. During his life, he was regarded as a model of knightly virtues and was renowned for winning multiple tournaments.
The Moldavian Magnate Wars, or Moldavian Ventures, refer to the period at the end of the 16th century and the beginning of the 17th century when the magnates of the Polish–Lithuanian Commonwealth intervened in the affairs of Moldavia, clashing with the Habsburgs and the Ottoman Empire for domination and influence over the principality.
The Battle of Baia was fought on December 15, 1467, between Moldavian prince Stephen the Great and the Hungarian king, Matthias Corvinus. Corvinus invaded Moldavia as a consequence of Stephen's annexation of Chilia—a fortress and harbour on the coast of the Black Sea—from Hungarian and Wallachian forces. It had belonged to Moldavia centuries earlier.
Michael the Brave, born as Mihai Pătrașcu, was the Prince of Wallachia, Prince of Moldavia (1600) and de facto ruler of Transylvania (1599–1600). He is considered one of Romania's greatest national heroes. Since the 19th century, Michael the Brave has been regarded by Romanian nationalists as a symbol of Romanian unity, as his reign marked the first time all principalities inhabited by Romanians were under the same ruler.
The Battle of Vaslui was fought on 10 January 1475, between Stephen III of Moldavia and the Ottoman governor of Rumelia, Hadım Suleiman Pasha. The battle took place at Podul Înalt, near the town of Vaslui, in Moldavia. The Ottoman troops numbered up to 120,000, facing about 40,000 Moldavian troops, plus smaller numbers of allied and mercenary troops.
The Battle of the Cosmin Forest (1497) was fought between the Moldavian Prince, Ștefan cel Mare, and King John I of Poland of the Kingdom of Poland. The battle took place in northern Moldavia, about 50 km north of the-then capital of Suceava, in the hills between Adâncata, situated in the valley of the Siret River, and Cernăuți, situated in the valley of the Prut River, and resulted in a major victory for Moldavia.
Ieremia Movilă, was a Voivode (Prince) of Moldavia between August 1595 and May 1600, and again between September 1600 and July 10, 1606. At the time, Moldavia was a vassal province of the Ottoman empire.
The Early Modern Times in Romania started after the death of Michael the Brave, who ruled in a personal union, Wallachia, Transylvania, and Moldavia – three principalities in the lands that now form Romania – for three months, in 1600. The three principalities were subjected to the Ottoman Empire, and paid a yearly tribute to the Ottoman Sultans, but they preserved their internal autonomy. In contrast, Dobruja and the Banat were fully incorporated into the Ottoman Empire.
Moldavia had a military force for much of its history as an independent and, later, autonomous principality subject to the Ottoman Empire.
The Hungarian–Ottoman wars were a series of battles between the Ottoman Empire and the medieval Kingdom of Hungary. Following the Byzantine Civil War, the Ottoman capture of Gallipoli, and the decisive Battle of Kosovo, the Ottoman Empire was poised to conquer the entirety of the Balkans. It also sought and expressed desire to expand further north into Central Europe, beginning with the Hungarian lands.
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 Jagiellonian or Jagellonian dynasty, otherwise the Jagiellon dynasty, the House of Jagiellon, or simply the Jagiellons, was the name assumed by a cadet branch of the Lithuanian ducal dynasty of Gediminids upon reception by Jogaila, the Grand Duke of Lithuania, of baptism as Władysław in 1386, which paved the way to his ensuing marriage to the Queen Regnant Jadwiga of Poland, resulting in his ascension to the Crown of the Kingdom of Poland as Władysław II Jagiełło, and the effective promotion of his branch to a royal dynasty. The Jagiellons reigned in several European countries between the 14th and 16th centuries. Members of the dynasty were Kings of Poland (1386–1572), Grand Dukes of Lithuania, Kings of Hungary, and Kings of Bohemia and imperial electors (1471–1526).
The Congress of Lutsk was a diplomatic gathering held in Lubart's Castle in Lutsk, Grand Duchy of Lithuania over a 13-week period beginning on January 6, 1429. The main topic of discussion was the coronation of Vytautas as the King of Lithuania. Other topics included: the siege of Moldavia, a potential coalition against the Ottoman Empire, the desire for improved relations between Denmark and the Hanseatic League, religious unions and divisions, as well as various economic, trade, and tax-related issues.
The Battle of Zlatitsa was fought on 12 December 1443 between the Ottoman Empire and Serbian and Hungarian troops in the Balkans as part of the larger Crusade of Varna. The battle was fought at Zlatitsa Pass near the town of Zlatitsa in the Balkan Mountains, Ottoman Empire. The impatience of the King of Poland and the severity of the winter then compelled John Hunyadi to return home in February 1444, but not before he had utterly broken the Sultan's power in Bosnia, Herzegovina, Serbia, Bulgaria, and Albania.
The War of the South Danube (1420–1432) was the sixth confrontation between the Kingdom of Hungary and the Ottoman Empire in the Balkans. The war was characterized by extensive destruction of the areas affected by hostilities.
Moldavia 
Transylvania 
Ottoman Empire 
Voivode of Moldavia most notably Alexander the good, Bogdan II, Stefan the Great, and John III the Terrible