Siege Operations around Sarmizegetusa Regia (First War)(102)
Background
Trajan advanced systematically after the victory at Adamclisi, cutting Dacian retreat lines and capturing fortresses one by one to isolate the capital.
Campaign: First Dacian War (101–102 AD)
Forces Engaged

The Battle
After Adamclisi, Roman columns advanced into the Orăștie Mountains, capturing key Dacian fortresses (Costești-Cetățuie, Blidaru, Piatra Roșie). Faced with the imminent fall of his capital, Decebal sued for peace, agreeing to surrender weapons, demolish fortifications, and withdraw from Roman allied territories.
Casualties & Outcome
Roman Empire achieved victory over Dacia.
Decebal accepts humiliating conditions: surrenders weapons, demolishes fortresses, becomes client king; the peace of 102 AD lasts only three years.
Historical Record


Significance & Legacy
The end of the First Dacian War (102 AD). It resulted in a humiliating peace treaty for Dacia — Decebal became a Roman client king. The peace proved temporary, as Decebal immediately began to rebuild his power.
Frequently Asked Questions
- When was the Siege Operations around Sarmizegetusa Regia (First War)?
- The Siege Operations around Sarmizegetusa Regia (First War) took place in 102. Spring–Summer 102 AD.
- Who won the Siege Operations around Sarmizegetusa Regia (First War)?
- The Roman Empire were victorious against the Dacia.
- What was the significance of the Siege Operations around Sarmizegetusa Regia (First War)?
- The end of the First Dacian War (102 AD). It resulted in a humiliating peace treaty for Dacia — Decebal became a Roman client king. The peace proved temporary, as Decebal immediately began to rebuild his power.