List of military conflicts involving Hungary (1301–1526)

• Charles Robert of Anjou became Hungarian king

• Battle of Rozgony

• Centralization of the Hungarian Kingdom

• The Wallachian army led by Basarab, formed of cavalry, peasants and foot archers, ambushed and defeated the 30,000-strong Hungarian army, in a mountainous region

• The Golden Horde was pushed back behind the Dniester River, the Golden Horde's control of the lands between the Eastern Carpathians and the Black Sea weakened
• The establishment of Moldavia in 1346 as a Hungarian vassal state.

Kingdom of Hungary

 Padua
Republic of Genoa
Duchy of Austria

Kingdom of Poland

• Moldavia became a Hungarian vassal.
• King Sigismund of Hungary occupied Suceava the capital of Stephen I of Moldavia.

• King Sigismund of Hungary had experience fighting with the Ottomans, but the French knights refused his battle plan. The French knights rushed to the Ottoman lines, while the other allies stayed with the Hungarian forces under King Sigismund, this caused confusion and divided the strength of the Crusader army.
• Ottomans defeat Crusades and no new Anti-Ottoman alliance is formed till the 1440s.
• Ottomans maintain pressure on Constantinople, tightened control over the Balkans, and became a greater threat to central Europe.
• Collapse of Second Bulgarian Empire.

• Battle of Dobor

• King Sigismund achieved a decisive victory over Tvrtko II of Bosnia, 126 members of Bosnian nobility were massacred.
• King Sigismund founded the Order of the Dragon as a celebration of the reoccupation of Bosnia and Dalmatia when he married Barbara of Cilli.

Moderate Hussites (since 1423)

• Compromise between moderate Hussites and the Catholic Church; both join forces to fight the radical Hussites

• The moderate Hussites are recognized by the Catholic Church and allowed to practice their own rite

• The radical Hussites are defeated, and their rites forbidden

• Sigismund of Luxembourg becomes King of Bohemia

• The Basel Compacts, signed by Emperor Sigismund and Catholic and Hussite representatives, effectively end the Hussite Wars

• Establishment of Unio Trium Nationum.

• Ali Bey suffered a defeat from the Hungarians in the summer of 1437 near Smederevo while the Hungarians were returning from their raid on Kruševac.^[5]

• Supporters of King Vladislaus I
• John Hunyadi
• Nicholas Újlaki

• Supporters of Elizabeth of Luxembourg and King Ladislaus V
• Ulrich Cillei

• John Hunyadi and Nicholas Újlaki annihilated the troops of Vladislaus opponents at Bátaszék at the beginning of 1441. Their victory effectively put an end to the civil war.
• The grateful king appointed Hunyadi and Újlaki joint Voivodes of Transylvania and Counts of the Székelys. Hunyadi was appointed as head of several southern counties of the Kingdom of Hungary, he assumed responsibility for the defense of the frontiers.

• Hunyadi began to make raids on the Ottoman countryside in Serbia and he defeated Ishak Bey, the commander of Smederovo.^[6][7]

• John Hunyadi marked his third victory over the Ottomans after the relief of Smederevo (1437) and the defeat of Ishak Beg midway between Semendria and Belgrade (1441).^[8]
• When John Hunyadi defeated Mezid Bey and the raiding Ottoman army in the south part of the Kingdom of Hungary in Transylvania, Hunyadi chased the Ottomans beyond the Hungarian borders and the Hungarian army penetrated Wallachia at the Red Tower Pass, Hunyadi forced Voivode Vlad II Dracul to became again a Hungarian vassal. Later continuing his campaign, Hunyadi also forced the Moldavian voivodes Ilie and Stephen II, who until that time had recognized the authority of the Polish king, to renew their loyalty to the Hungarian king.^[8]

• According to contemporary sources, Ottoman army had 80,000 people, Hungarian army had 15,000 men.^[9] John Hunyadi defeated a large Ottoman army of Beylerbey Şehabeddin, the Provincial Governor of Rumelia.^[10]
• This was the first time that a European army defeated such a large Ottoman force, composed not only of raiders, but of the provincial cavalry led by their own sanjak beys (governors) and accompanied by the formidable janissaries.^[10]
• Hunyadi gained a huge booty. He put lots of treasures and weapons on a wagon that ten horses could hardly pull and sent it to King Vladislaus I of Hungary to Buda.

• Peace of Szeged

• Vladislaus I of Hungary, the young king, ignoring Hunyadi's advice, rushed 500 of his Polish knights against the Ottoman center. They attempted to overrun the Janissary infantry and take Murad II prisoner, and almost succeeded, but in front of Murad's tent Vladislaus's horse either fell, and the king was slain.
• Murad's casualties at Varna were so heavy, it was not until three days later that he realized he was victorious.
• The Ottoman victory in Varna, followed by the Ottoman victory in the Second Battle of Kosovo in 1448, deterred the European states from sending any substantial military assistance to the Byzantines during the Ottoman Siege of Constantinople in 1453.

• John Hunyadi deprived Vlad II Dracul from the Wallachian throne, because Vlad II Dracul captured Hunyadi after the Battle of Varna.
• Hunyadi placed Vladislav II on the throne of Wallachia.
• Hunyadi also drove a small Ottoman army out of Wallachia.

Serbian Despotate

• The Ottoman Sultan, Mehmed II invaded Serbia in May 1454 and laid siege to Smederevo, thus violating the truce of November 1451 between his empire and Hungary.^[16] John Hunyadi decided to intervene and started to assemble his armies at Belgrade, forcing the Sultan to lift the siege and leave Serbia in August.^[17][18] However, an Ottoman force of 32,000 strong continued to pillage Serbia up until Hunyadi routed them at Kruševac on 29 September.^[19][20]
• He made a raid against the Ottoman Empire and destroyed Vidin before returning to Belgrade.^[21]

• The Siege of Belgrade was a major issue for the entire Europe, especially after the fall of Constantinople in 1453. The fall of the fortress city of Belgrade would have opened the gates of Europe to the Turks and that would have certainly changed the history of the world.
• The Battle of Belgrade deserves to be remembered. Hungarians played a key role in the defense of Europe against the invasion of the Turks in the 15th century.
• Pope Callixtus III ordered the bells of every European church to be rung every day at noon, as a call for believers to pray for the defenders of the city. But because in many European countries the news of victory arrived before the Pope's order for prayer, the ringing of the church bells was believed to be in celebration of the victory. Therefore, the significance of the church bells ringing is now the commemoration of Hunyadi's victory against the Turks.
• Plague broke out in the camp, from which John Hunyadi himself died three weeks later.

• The Ottomans lured the small advancing army of Michael Szilágyi into a trap at Pozazin. Michael Szilágyi was being captured by Ali Bey Mihaloğlu. Michael Szilágyi was transferred to Constantinople, he was decapitated by the orders of the Sultan.

• Battle of Baia / Moldvabánya

• Hungary defeats the highly outnumbered Ottoman army in Transylvania. Ottoman casualties were extremely high. The battle was the most significant victory for the Hungarians against the raiding Ottomans, and as a result, the Ottoman Turks did not attack southern Hungary and Transylvania for many years thereafter.

• At the end of the campaign, Hungary controlled all of Upper Austria as well, which remained under the control of King Matthias until his death, in 1490.

• First siege

• Second siege

• The Black Army captures Vienna. The city is then merged into Hungary from 1485 to 1490. where Matthias moved his royal court.

• City surrenders
• Austria ceded the western lands of Lower Austria, Styria and Carinthia to the Kingdom of Hungary.

Kingdom of Hungary

• Royal power declined in favour of the magnates, who used their power to curtail the peasants' freedom. Gyorgy led a revolt but was eventually caught, tortured, and executed and became known as a martyr or a dangerous criminal.^[22]

• Decisive downward turning point in Hungarian history.
• Destruction of the Kingdom of Hungary as an independent and powerful European nation.
• The territory of Hungary was split into two parts in 1529 and into three parts in 1541.
• Around two hundred years of constant warfare with and between two empires, Habsburg and Ottoman, turned Hungary into a perpetual battlefield. The countryside was regularly ravaged by armies moving back and forth devastating the population.