The 2nd Dacian War: The Battle of Sarmizegethusa (105 AD)
The Second Dacian War, fought between the Roman Empire and the Dacian Kingdom, stands as a crucial chapter in the history of both the Roman Empire and the ancient Dacians. The battle that unfolded near the Dacian capital, Sarmizegethusa, in 105 AD marked the end of Dacia as a sovereign power and the beginning of its annexation into the Roman Empire. This momentous conflict led to the subjugation of the Dacians, following years of conflict, strategic warfare, and political maneuvering. In this article, we will explore the significance of the 2nd Dacian War, the key figures involved, the battle itself, and the aftermath, offering a comprehensive view of how the events unfolded.
Background to the Conflict
The Dacian Wars were a series of military conflicts fought between the Roman Empire and the Dacian Kingdom. Dacia, located roughly in the area of modern-day Romania, was a powerful kingdom ruled by King Decebalus. The region was rich in resources, especially gold, making it a highly desirable territory for the expanding Roman Empire. Under the leadership of Emperor Trajan, Rome sought to expand its borders and gain access to these precious resources.

The first Dacian War, which took place between 101 and 102 AD, had ended in a Roman victory, forcing King Decebalus to accept humiliating peace terms. However, despite the treaty, Decebalus rebuilt his army and began a campaign of resistance against Roman influence in the region. By 105 AD, tensions had escalated once again, and the Roman Empire decided to launch a second campaign to decisively crush Dacian power.
The Key Figures: Emperor Trajan and King Decebalus
At the forefront of this battle were two men: Emperor Trajan of Rome and King Decebalus of Dacia. Trajan, known for his military prowess and ambitious expansionist policies, had already proved his capabilities in the first Dacian War. He was celebrated for his strategy and his ability to command vast armies with precision.
Decebalus, on the other hand, was a brilliant military strategist and the last king of the Dacian Kingdom. After the Roman victory in the first war, he worked diligently to rebuild his kingdom and army, hoping to drive the Romans out of Dacia. Despite his efforts, Decebalus could not match the resources and might of the Roman legions, making his kingdom’s eventual downfall inevitable.
The Campaign and Battle of Sarmizegethusa
The decisive battle that took place in 105 AD near Sarmizegethusa, the Dacian capital, was the culmination of months of Roman military campaigning. Trajan’s forces, well-equipped and well-organized, marched into Dacia in early 105 AD. This time, the Romans brought an overwhelming force, numbering upwards of 150,000 soldiers, including Roman legions, auxiliaries, and allies. These forces were supported by advanced siege weaponry, engineering units, and a relentless strategy designed to break the Dacian resistance once and for all.
Sarmizegethusa, the fortress city and symbolic center of Dacian power, was heavily fortified. The Dacians, under Decebalus, had prepared for the Roman assault by reinforcing their defenses, including fortifications in the surrounding mountains. Despite these efforts, the Romans were better equipped for siege warfare. Trajan’s forces launched a series of coordinated assaults, gradually encircling the city and cutting off any chance of Dacian reinforcements arriving.
King Decebalus, facing imminent defeat, attempted to lead his forces in a final stand, but the sheer strength of the Roman military proved insurmountable. Roman soldiers stormed the Dacian positions, and after fierce fighting, Sarmizegethusa fell to the Romans. The battle was a decisive moment in the war, and the fall of the Dacian capital marked the collapse of the Dacian kingdom.
The Aftermath of the Battle
With the defeat of Decebalus and the fall of Sarmizegethusa, the Second Dacian War came to an end. Trajan’s victory was celebrated throughout the Roman Empire, and it had significant consequences for the Dacians. Decebalus, in a desperate attempt to evade capture, eventually committed suicide rather than be taken alive by the Romans. The Dacian Kingdom was completely annexed into the Roman Empire, becoming the Roman province of Dacia.
The spoils of war were considerable. Roman legions looted vast quantities of Dacian gold, which was used to finance Trajan’s other military ventures and public works projects back in Rome. In addition to the treasure, the conquest of Dacia provided Rome with valuable resources, particularly the gold mines in the region, which contributed to the Empire’s wealth and stability for years to come.
The defeat of the Dacians also had profound cultural and social consequences. The Dacians who survived the war were either enslaved or integrated into Roman society. The region was heavily Romanized, with the construction of Roman cities, roads, and fortifications, which became the foundation for the future development of Romania. The Dacian language and culture gradually disappeared, absorbed into the broader Roman and later Byzantine cultures.
The Legacy of the 2nd Dacian War
The 2nd Dacian War and the battle of Sarmizegethusa have left a lasting legacy on both Roman and Dacian history. For the Romans, the victory solidified Trajan’s reputation as one of the greatest military emperors, and it marked a period of expansion and prosperity for the Empire. Trajan’s column, located in Rome, stands as a monument to his victory and showcases detailed reliefs of the campaign, serving as a visual record of the war and the Roman military’s might.
For the Dacians, the war spelled the end of their independence and their way of life. The Dacian resistance, led by Decebalus, has been remembered for its bravery, but the overwhelming power of the Roman Empire proved too much to overcome. The fall of Sarmizegethusa, once the heart of Dacian civilization, symbolized the end of an era for the Dacian people.
In modern-day Romania, the memory of the Dacian Wars is still significant. The Dacian Kingdom is regarded as an important part of Romanian heritage, and the remains of Dacian fortresses, including those around Sarmizegethusa, are UNESCO World Heritage Sites. These sites continue to draw visitors, historians, and archaeologists interested in learning more about the ancient civilization that once thrived in the Carpathian Mountains.
Conclusion
The Second Dacian War, culminating in the battle of Sarmizegethusa in 105 AD, was a pivotal moment in the history of the Roman Empire. Under the leadership of Emperor Trajan, Rome succeeded in conquering the Dacian Kingdom, securing its wealth and resources for the Empire. The defeat of King Decebalus and the fall of the Dacian capital marked the end of Dacia’s independence and its absorption into the Roman Empire. The aftermath of the war brought significant cultural, social, and political changes, not only for the Dacians but also for the Roman Empire. Today, the legacy of the Dacian Wars remains a vital part of Romanian identity and historical memory, a testament to the enduring impact of this ancient conflict.