Roman conquest of Dacia
| Dacian Wars | |||||||||
|---|---|---|---|---|---|---|---|---|---|
 Roman soldiers defending a fort against attack by the Dacians. (detail from Trajan's Column) |
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| Belligerents | |||||||||
 Dacia
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Roman Empire | ||||||||
| Commanders and leaders | |||||||||
| Decebalus | Trajan | ||||||||
| Strength | |||||||||
| Unknown. Total manpower pool of some 250,000. |
150,000 in the first war - 200,000 in the second war | ||||||||
| Casualties and losses | |||||||||
| Unknown | Unknown | ||||||||
The Dacian Wars (101–102, 105–106) were two military campaigns fought between the Roman Empire and Dacia during Roman Emperor Trajan's rule. The conflicts were triggered by the constant Dacian threat on the Danubian Roman Province of Moesia and also by the increasing need for resources of the economy of the Roman Empire.
Trajan turned his attention to Dacia, an area north of Macedon and Greece and east of the Danube that had been on the Roman agenda since before the days of Caesar when they defeated a Roman army at the Battle of Histria. In AD 85, the Dacians swarmed over the Danube and pillaged Moesia and initially defeated the army that Emperor Domitian sent against them. The Romans were defeated in the Battle of Tapae in 88 and a truce was established.
Emperor Trajan recommenced hostilities against Dacia and, following an uncertain number of battles, defeated the Dacian KingDecebalus in the Second Battle of Tapae in 101. With Trajan's troops pressing towards the Dacian capital Sarmizegetusa Regia, Decebalus once more sought terms. Decebalus rebuilt his power over the following years and attacked Roman garrisons again in 105. In response Trajan again marched into Dacia, besieging the Dacian capital in the Siege of Sarmizegetusa, and razing it. With Dacia quelled, Trajan subsequently invaded the Parthian empire to the east, his conquests expanding the Roman Empire to its greatest extent. Rome's borders in the east were indirectly governed through a system of client states for some time, leading to less direct campaigning than in the west in this period.
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