Battle of Pydna - Campaign

Campaign

The Third Macedonian War started in 171 BC, after a number of acts on the part of King Perseus of Macedon incited Rome to declare war. At first, the Romans won a number of small victories, largely due to Perseus' refusal to consolidate his armies. By the end of the year, the tide changed dramatically and Perseus had regained most of his losses, including the important religious city of Dion. Perseus then established himself in an unassailable position on the river Elpeus, in northeastern Greece.

The next year, command of the Roman expeditionary force passed to Lucius Aemilius Paullus, an experienced soldier who was one of the consuls for the year. To force Perseus from his position, Paullus sent a small force (8,200 foot and 120 horse) under the command of Publius Cornelius Scipio Nasica Corculum to the coast, a feint to convince Perseus that he was attempting a riverborne flanking maneuver. Instead, that night Scipio took his force south and over the mountains to the west of the Roman and Macedonian armies. They moved as far as Pythion, then swung northeast to attack the Macedonians from the rear.

A Roman deserter, however, made his way to the Macedonian camp and Perseus sent a force of 12,000 under the command of Milo to block the approach road. The encounter that followed sent Milo and his men back in disarray towards the main Macedonian army. After this, Perseus moved his army northwards and took up a position near Katerini, a village south of Pydna. It was a fairly level plain and was very well suited to the phalanx.

Paullus then had Scipio rejoin the main force, while Perseus deployed his forces for what appeared to be an attack from the south by Scipio. The Roman armies were actually to the west, and when they advanced, they found Perseus fully deployed. Instead of joining battle with troops tired from the march, they encamped to the west in the foothills of Mount Olocrus. At the night before the battle there was an eclipse of the moon, which was perceived by the Macedonians as an ill omen, bringing fear and terror into their hearts. According to Plutarch, they interpreted it as a sign of their king's demise.

The fighting began the afternoon of the next day, June 22. The exact cause of the start of the battle differs; one story is that Paullus waited until late enough in the day for the sun not to be in the eyes of his troops, and then sent an unbridled horse forward to bring about alarm. More likely it was the result of some Roman foragers getting a little too close and being attacked by some Thracians in Perseus' army.