Baldwin IV’s victory over Saladin at Montgisard in 1177 deserves its reputation. A teenage king living with leprosy helped turn a dangerous invasion into an Ayyubid defeat. It was an extraordinary achievement, even without the enormous armies and miraculous interventions that tend to gather around the story.
Yet Baldwin did not defeat Saladin every time they met, nor did he discover a permanent solution to Jerusalem’s military problems. His reign included failed operations, lost fortifications and increasingly difficult decisions about who should govern when he could no longer do so himself.
What interests me most is the judgement behind the courage. Baldwin’s military record becomes more compelling when we allow him to be a capable, fallible ruler rather than a saint on horseback.
Who Was Baldwin IV?
Baldwin IV became king of Jerusalem in July 1174, aged thirteen, following the death of his father, Amalric. His kingdom comprised a network of towns, agricultural estates, castles and ports whose defence depended on cooperation between the crown, the nobility and the military orders.
His tutor, William of Tyre, had noticed an alarming symptom during Baldwin’s childhood: the boy felt little or no pain when his companions pinched his right arm. As he grew older, his illness became unmistakable.
William also remembered an intelligent pupil with a strong memory and considerable skill with horses. His account preserves something easily lost beneath Baldwin’s later reputation: a boy with interests and abilities before he became a symbol of endurance.
The illness affected the practical business of kingship. Baldwin’s ability to ride, campaign and administer government deteriorated over time. His military career therefore needs to be understood in stages. The mounted king at Montgisard in 1177 and the severely disabled ruler of his final years faced very different physical circumstances.
Why Was Saladin Such a Dangerous Opponent?
Saladin’s growing control over Egypt and substantial parts of Syria placed the crusader states under increasing pressure. Jerusalem could no longer rely on its powerful neighbours remaining permanently divided.
However, Saladin’s authority was neither complete nor effortless. Rival Muslim rulers, contested territories and the demands of maintaining his coalition repeatedly competed with campaigns against the Franks.
That distinction matters. Baldwin faced a formidable opponent, but Saladin could not simply direct every soldier and every resource towards Jerusalem whenever he wished. The kingdom’s survival depended partly on exploiting those competing commitments.
Medieval warfare involved rather more scheduling than the paintings suggest.
What Happened at the Battle of Montgisard?
On 25 November 1177, Baldwin’s forces defeated Saladin’s invading army near Ramla, at the battle generally known as Montgisard.
The invasion came at an awkward moment. Important Frankish contingents were campaigning further north, leaving the kingdom’s southern defences short of men. Saladin advanced from Egypt while Baldwin gathered the forces available to him.
Baldwin reached Ascalon, but Saladin continued into the kingdom. As the invasion developed, Ayyubid troops dispersed to raid, forage and plunder. The Franks subsequently caught the invading army in circumstances that made it difficult to concentrate and organise its full strength.
The resulting attack broke Saladin’s army and forced a retreat towards Egypt.
The broad outcome is clear. The precise battlefield movements are much less secure. Modern reconstructions differ over the routes taken, the location of particular actions and the contribution of individual commanders. Michael Ehrlich’s reassessment of Montgisard stresses the difficulties of reconstructing medieval battles from partisan written accounts. Journal of Medieval Military History
We can explain why the victory was possible without pretending to possess a minute-by-minute account.
How Did Baldwin Win Against a Larger Army?
The most convincing explanation combines opportunity, concentration and experienced military leadership.
Saladin’s numerical advantage was harder to use once his army had dispersed. Men scattered across the countryside could not all contribute immediately when the Franks attacked. An army’s total strength and the force it can deploy at a particular moment are different things.
Baldwin’s army acted before that advantage could be fully restored. Speed mattered because the opportunity was temporary. Waiting might have allowed Saladin to assemble his troops in a stronger position.
Mounted troops could exploit disorder. Frankish knights were especially dangerous when attacking an opponent struggling to form a coherent defence. Their effectiveness depended on circumstances, rather than some automatic superiority over Ayyubid cavalry.
Baldwin had experienced men around him. Raynald of Châtillon and the Templars belonged to the military setting of the campaign. Assigning every useful decision to the sixteen-year-old king gives us a tidy story, but a poor explanation of how medieval armies worked. Accounts differ over who deserves the greatest share of tactical credit.
My reading is that Baldwin deserves credit for participating in a dangerous and successful operation while recognising that victory was a collective achievement. A king did not need to invent every manoeuvre personally to lead effectively.
How Many Soldiers Fought at Montgisard?
The familiar claim that a few hundred knights defeated tens of thousands needs careful handling.
William of Tyre’s account is commonly cited for approximately 375 knights accompanying Baldwin to Ascalon. That figure should not be treated as a complete census of everyone who subsequently fought. Knights were a category of combatant, not a synonym for an entire army.
Infantry, mounted supporting troops and additional contingents complicate the calculation. Estimates of Saladin’s strength also depend on accounts whose figures cannot be independently checked.
| Question | What can reasonably be said |
|---|---|
| Was Baldwin outnumbered? | The surviving accounts support a substantial Ayyubid numerical advantage. |
| Did he fight with only 375 men? | No. The frequently repeated figure concerns knights, rather than every combatant. |
| Are exact army sizes known? | No. Precise totals and casualty percentages should be treated cautiously. |
The victory remains impressive without turning uncertain medieval arithmetic into established fact.
Did Baldwin Always Defeat Saladin?
No. The events of 1179 provide the clearest correction to that impression.
Frankish operations near Banias went badly, and Baldwin’s army suffered defeat at Marj Ayyun in June. Later that summer, Saladin captured and destroyed the new fortress at Jacob’s Ford, also called Chastellet or Vadum Iacob.
Baldwin had supported its construction near an important crossing of the upper Jordan. Its position threatened Ayyubid interests and offered the Franks an opportunity to strengthen their frontier. It was an ambitious project, rather than a purely passive defensive measure.
Saladin recognised the danger and destroyed the fortress before the Franks could save it. Malcolm Barber’s study treats the campaign as a serious struggle for control of a strategically valuable frontier.
This was a substantial failure. Including it does not diminish Montgisard. It prevents one victory from swallowing the rest of Baldwin’s reign.
How Did Castles and Relief Armies Help Him Hold the Kingdom?
Fortifications could delay an invasion, shelter defenders and force an attacker to spend time on a siege. Their greatest value often emerged when they operated alongside an army capable of threatening the besiegers.
Kerak illustrates this relationship.
During Saladin’s siege in late 1183, Baldwin accompanied the relief expedition despite his severe illness, travelling in a litter. Raymond III of Tripoli held field command. Saladin withdrew as the Frankish army approached.
The episode demonstrated the continuing value of royal authority and coordinated military action. It did not require Baldwin to fight personally, and it should not be transformed into a battlefield duel between two monarchs.
Baldwin’s presence may have carried considerable symbolic weight. The immediate military problem for Saladin, however, was the approaching army.
A determined king helped bring that army together. Determination alone could not replace it.
What Role Did Diplomacy Play?
Baldwin’s government also negotiated.
A two-year truce agreed with Saladin in 1180 gave both sides breathing space. Baldwin faced divisions within his kingdom, while Saladin wanted freedom to pursue other regional objectives.
Relations with Byzantium remained important too. Baldwin’s government sought to preserve imperial support, although Emperor Manuel I’s death in 1180 complicated that relationship.
Such diplomacy belongs at the centre of Baldwin’s military record. A truce could conserve troops, protect commerce and postpone a campaign at an inconvenient moment.
The difficulty lay in enforcing agreements across a kingdom whose powerful lords had interests of their own. Raynald of Châtillon’s attack on a caravan in 1181 exposed the limits of Baldwin’s authority. Saladin demanded redress, but the king could not secure it.
Royal government involved persuading heavily armed aristocrats to behave sensibly. The evidence suggests this remained an unreliable system.
What Do Contemporary Sources Tell Us?
William of Tyre is indispensable because he knew Baldwin and occupied senior positions within the kingdom.
Remembering his pupil, he wrote:
“He had a tenacious memory and loved to talk.”
That small observation gives Baldwin more individuality than many grand descriptions of heroic suffering. William also recorded his worsening illness and the growing difficulty of continuing to govern.
Yet William was a political participant with loyalties and grievances. His account of court disputes must be read with particular care. Bernard Hamilton’s study shows how his privileged knowledge coexisted with selective reporting. The Leper King and his Heirs
The same caution applies to accounts written in Saladin’s political world. Victory, defeat, religious legitimacy and a ruler’s reputation all shaped the presentation of events.
I find these sources most useful when read against one another. Their disagreements are part of the evidence.
What Does Archaeology Add?
The evidence from Jacob’s Ford provides an unusually direct connection with warfare during Baldwin’s reign.
A published study examined five members of the castle’s garrison recovered from deposits associated with its destruction in 1179. Researchers identified multiple sword and arrow injuries, including arrowheads still present in the remains.
The bodies appear to have been stripped of armour and deposited with dead horses.
These discoveries cannot explain Baldwin’s decisions at Montgisard. They reveal something different: the physical consequences when a frontier stronghold fell.
They also make it harder to sustain an exclusively chivalric account of Baldwin and Saladin. Their campaigns involved frightened defenders, lethal injuries, executions and devastated communities. Admiration for either ruler should leave room for those people.
Baldwin IV’s Military Reign at a Glance
| Date | Event | Significance |
|---|---|---|
| 1174 | Baldwin becomes king | A royal minority begins as the regional balance shifts. |
| 25 November 1177 | Victory at Montgisard | Saladin’s invasion ends in a major defeat. |
| 1178–1179 | Construction of Jacob’s Ford fortress | Baldwin supports an ambitious frontier project. |
| June 1179 | Defeat at Marj Ayyun | Frankish forces suffer a serious reverse. |
| August 1179 | Fall of Jacob’s Ford | Saladin captures and demolishes the fortress. |
| 1180 | Truce with Saladin | Both governments gain time for other priorities. |
| 1182 | Campaign around Le Forbelet | Frankish resistance checks Saladin’s advance. |
| 1183–1184 | Defence of Kerak | Saladin fails to capture the fortress during Baldwin’s lifetime. |
| 1185 | Baldwin dies | The kingdom faces another vulnerable succession. |
These events show a reign of victories, setbacks and negotiated pauses, rather than uninterrupted military superiority.
How Should We Judge Baldwin’s Achievement?
Baldwin did not destroy Ayyubid power. He helped preserve his kingdom against it while living with an increasingly disabling illness.
His strongest claim to distinction rests on the combination of personal courage, effective cooperation with experienced commanders and the ability to sustain royal government under exceptional pressure. His failures matter because they reveal the limits within which those achievements occurred.
Jerusalem’s fall in 1187, two years after his death, should not turn his reign into an inevitable prelude to disaster. Equally, we cannot know that his survival would have prevented Hattin.
What we can say is substantial enough. Baldwin helped win a remarkable victory at Montgisard, endured serious reverses and remained an important source of authority as his physical independence disappeared.
For me, the most affecting part of his story is that continued effort: the difficult business of governing, delegating and taking responsibility when withdrawal would have been entirely understandable.
