The Battle of Mohács (1526) — Imperial Ottoman

The Battle of Mohács of 29 August 1526 was the decisive engagement of the first major Ottoman campaign into Central Europe under Suleiman the Magnificent. The defeat of the Hungarian army and the death of King Louis II of Hungary opened the way for the Ottoman occupation of Buda, transformed the politics of the region, and set the stage for the long contest between the Habsburgs and the Ottomans for control of Hungary. The battle is one of the central events of the Ottoman golden age and forms an important episode in the broader history of the Ottoman Empire. The site is in the southern Hungarian plain near the Danube, far south of Buda, and the geography matters: the Hungarian army had to march south from Buda into the marshy ground below the Mohács plateau, where the Ottoman artillery could pin them against the Csele creek in their rear.

Key dates

1490 — Death of Matthias Corvinus; the Hungarian magnates begin to fragment royal authority.
1508 / 1516 — Louis II crowned as an infant in 1508, succeeds to the throne in 1516 at the age of nine.
April 1526 — Ottoman army leaves Istanbul; the campaign begins.
29 August 1526 — The battle, on the plain south of Mohács.
September 1526 — Ottomans occupy Buda.
1529 — First Ottoman siege of Vienna.

The Hungarian kingdom in 1526

Hungary in the early sixteenth century was a kingdom of great size but weak central authority. The Hungarian magnates, the higher nobility, controlled vast estates and private armies, and the kingship was elective in practice. The death of King Matthias Corvinus in 1490 had been followed by a long period of noble faction, during which the kingdom was repeatedly invaded by the Ottomans. The Ottoman-Hungarian frontier had been contested since the fall of Constantinople in 1453, when Belgrade, then under Hungarian rule, became the northernmost outpost of the Ottoman advance.

The young king, Louis II of the Jagellonian dynasty, was crowned as an infant in 1508 and succeeded to the Hungarian throne on 13 March 1516 at the age of nine. He inherited a kingdom in fiscal crisis, with a treasury that had been emptied by his predecessors and an army that was poorly equipped and badly led. The magnates refused to provide the troops and money needed to defend the country. The Hungarian “Black Army” of Matthias Corvinus had been paid for by the gold and silver mines of Upper Hungary; by 1526, those revenues had been lost to Ottoman raids, and the standing army had collapsed.

The Ottoman campaign

Suleiman left Istanbul in April 1526 at the head of an army estimated at 80,000 men, the largest Ottoman force yet to invade central Europe. The campaign was launched in part in response to a request from the French king Francis I, who had been defeated at the Battle of Pavia in 1525 and was looking for allies against the Habsburgs. Andrew Wheatcroft, in The Enemy at the Gate (2008), notes that the timing reflected a longer Ottoman calculation: the death of Louis II’s father-in-law, Vladislaus II of Bohemia and Hungary, had left a regency dispute, and the Hungarian magnates’ divisions were visible from Istanbul. The army moved up the Danube. It took Peterwardein (Petrovaradin) in July and then crossed into the Hungarian plain. The campaign was accompanied by the Tatar cavalry of the Crimean khan, who provided scouting and harried the Hungarian rear.

The Hungarian preparations

The Hungarian diet met in April 1526 and voted to raise a national army, but the mobilization was slow and the nobles reluctant. The army that finally assembled at Mohács in late August has been estimated at between 20,000 and 30,000 men, the majority of them infantry poorly armed and badly led.

The Hungarians were joined by a small contingent of papal troops and by a force of Czech mercenaries, but the army was too small and too badly organized to face the Ottoman host. The archbishop of Kalocsa, Pál Tomori, who had been appointed to command, was a Franciscan friar with limited military experience, although he had fought in earlier campaigns along the southern frontier. The papal nuncio to Hungary at the time was Antonio Burgio, who accompanied the army and was killed in the rout.

The battle

The two armies met on the plain of Mohács, in the southern Hungarian plain near the Danube, far south of Buda, on 29 August 1526. The Hungarians advanced across a stream and up a slope toward the Ottoman lines. The Ottoman artillery, well positioned on higher ground, opened fire, and the Hungarian infantry suffered heavy losses before they reached the Ottoman lines. The marshy ground and the Csele creek to the Hungarian rear also limited their ability to maneuver.

The Ottoman cavalry attacked on the flanks, and the Hungarian army collapsed. King Louis II was thrown from his horse while fleeing and drowned in the Csele creek. The archbishop Tomori, the papal nuncio Antonio Burgio, and most of the Hungarian magnates were killed. The army was virtually annihilated; modern estimates put Hungarian dead at around 1,500 nobles and perhaps 14,000 total, against Ottoman losses in the low thousands.

The aftermath

The defeat at Mohács was followed by the Ottoman occupation of Buda in September 1526. The Hungarian diet, meeting later that year, elected the Habsburg archduke Ferdinand of Austria as king, in part to call on Habsburg aid against the Ottomans. A rival candidate, John Zápolya, was also elected, and Hungary was divided between the two for decades. The Hungarian Holy Crown was rescued by Queen Mary and smuggled to Vienna, where it remained until 1790, a fact that lent the Habsburg claimant a powerful symbol of legitimacy.

The Battle of Mohács is often treated as a turning point in Hungarian history. The kingdom was divided, the nobility fragmented, and the central state weakened. The Ottoman occupation of central Hungary lasted until the late seventeenth century, and the long contest with the Habsburgs was the background to the whole subsequent history of the region, culminating in the territorial losses recorded in the Treaty of Karlowitz of 1699.

For the Ottomans, the battle was the first great victory of Suleiman’s reign in Europe. It established the empire as the dominant power of the southern Hungarian plain and opened the way for the unsuccessful first siege of Vienna three years later. The political consequences unfolded gradually, but within decades the Ottomans were governing Buda and most of the Hungarian plain, a situation that would persist until the long crisis that led to the Treaty of Karlowitz. The “Mohács Vespers” of Hungarian national memory, a myth of betrayal and lost opportunity, took shape over the following century and was used by Habsburg propaganda as much as by Hungarians themselves.

Frequently asked questions

Where was the Battle of Mohács fought?

In the southern Hungarian plain, on a flat field just south of the market town of Mohács and the Danube, in what is now Baranya county. The terrain mattered: the marshy ground and the Csele creek in the Hungarian rear prevented any orderly retreat.

Why did Hungary lose?

Three reasons, in descending order of importance. First, the Ottoman army was much larger, and its artillery was decisively better. Second, the Hungarian magnates had spent a decade quarrelling, and the mobilization was slow. Third, the king’s command was weak: the appointment of Tomori, a cleric, to lead the army reflected the shortage of military talent at the centre.

What happened to the Hungarian Holy Crown?

Queen Mary, the wife of Louis II, saved it from Buda and smuggled it to Vienna. It remained there until 1790, when the Habsburgs returned it as a gesture of goodwill. The episode gave the Habsburg claimant to the Hungarian throne a powerful symbol of continuity that the rival Zápolya could never match.