Since we're all into historical revisionism here at TWCenter I think it's important to ask this question. What would have happened if Julius Caesar attacked Burebista's Dacian Kingdom in 43BC, the year before the assassinations of both of these rulers.
So let us give some background info. This is the Roman Empire in 44BC:
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And this is the Dacian Kingdom in 44BC:
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Alternative map:
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Historically the Dacian kingdom was conquered 150 after Caesar's death by Trajan. However, that is not an accurate reflection of how it could have been in 44BC. The Roman Empire was substantially larger in 101AD when and the Dacian Kingdom was over 5x smaller at that point, the rest being fragmented among the other Dacian tribes (Costoboci, Carpi, Getai etc.). [see euroatlas]
First of all there was a rather serious plan by Julius Caesar to attack the Dacian Kingdom before he was assassinated. In 89BC the consul Curio planned attacking the Dacians but upon arriving at the Danube he was too scared of them and decided not to (the Roman authors say he was "afraid of the dark forests" but we all know the truth ) [Florus, Epitome. III: "Curio Dacia tenus venit; sed tenebras saltuum expavit"]. Julius Caesar was considering fighting the Dacians according to Suestonius but his death prevented war [Suestonius, Julius Caesar. XLIV: "Dacos qui se in Pontum et Thraciam effuderant coercere... mors praevenit."].
So, assuming Julius Caesar does not die and he declares war on Dacia, what would have happened?
a) The Romans would have wiped out the Dacians. No question about it.
b) The Romans could have fought the Dacians to the Danube, then a peace settlement would have been made between Julius Caesar and Burebista, with a partial Roman victory.
c) The Dacians would have takebn Illyria and Anatolia most likely with their confederate allies. The Romans would have been pushed back and sued for peace.
d) The Dacians would have taken Rome and become the preeminent power in the West.
Before you make any rash choices, consider this:
-The Dacians were fierce horsemen, fighting in a style which the Romans had not encountered before. According to Theucydides "The Getai [read: Dacians] and the other people from these lands are neighbors of the Scythians, they have the same weapons and the same customs; they all shoot with the bow from horseback."]
-Burebista had interefered in the Roman Civil War, supporting Pompey. He knew the Romans and their style of warfare but they did not know his. Burebista is also considered to have been implicated in the Illyrian revolt of 48BC.
- Burebista's reign coincided with Dacian apogee. He has smashed the Bastarnae, Boii, Taurisci, Scordisi and Scythians. After his death his kingdom was split into four, then five pieces. Strabon wrote of him: "Burebista, the Get, Having become the leader of a people exhausted by frequent wars, the Getic Burebista raised it so much through drilling, abstention from wine and obedience to orders that he achieved a powerful state within a few years, he created a great kingdom and brought almost all of the Getai's neighbors under their rule; coming to be feared by the Roman themselves, as he crossed the Danube without care of anyone and looted Thrace up until Macedonia and Illyria, while the Celts whom mixed with the Thracians and Illyrians were devastated, while the Boii who listened to the king Cristasiros, as well as the Taurisci were wiped off the face of the earth." As can be seen the Romans feared the Dacians, but the Dacians didn't fear Rome. It was not mutual according to Strabon.
-The people of Dyonisios referred to Burebista as "the first and the most powerful among the kings who ever reigned in Thraike, master of the entire region this side of the great river"
-Strabon gives Burebista's military power at 200,000 men. [Geografia, Book VII, 3, 13]. He sometimes even refers to Burebista's realm as an "empire." Whether exaggerated or not, it is clear Burebista had a considerable army at his disposal. Strabon himself says that once the kingdom was divided into 5, each kingdom could barely muster 40,000 men for their own defense. While 200,000 is an enormous figure, it is definitely not impossible to imagine, especially given that Burebista was the supreme lord of a vast land.
-When the Romans did conquer Dacia under Trajan they had to do it as the largest military operation in Roman history. Trajan brought 150,000 men in 101AD and 200,000 men in 106AD and only then was he able to conquer half of the Dacians. This leads me to believe that Julius Caesar would be hard-pressed for a victory given his far more limited manpower and far stronger opponent.
So, what would have happened?