Macedonian Wars

The Macedonian Wars, spanning from 214 to 148 BC, pitted the Roman Republic, alongside its Greek allies, against several major Greek kingdoms in the eastern Mediterranean. These conflicts extended Rome’s influence and control over Greece and the broader eastern basin, adding to its already dominant position in the west following the Pyrrhic and Punic Wars. The term “Macedonian Wars” traditionally covers four conflicts with Macedonia itself, a separate war with the Seleucid Empire, and a final, smaller engagement with the Achaean League—the latter often seen as the last phase of the final Macedonian war.

The war with the Seleucid Empire was the most significant of these. Both that conflict and the wars with Macedonia effectively ended those kingdoms as major world powers, though neither immediately resulted in overt Roman domination. Rome fought four separate wars against the weaker Macedonian kingdom, largely because of its geographic proximity. However, the last two of these were directed at scattered insurrections rather than formidable armies. Over time, Roman influence gradually eroded Macedonian independence, absorbing it into what was becoming a leading empire. The war with the declining Seleucid Empire proved ultimately fatal to it as well, though the rising influence of Parthia and Pontus prevented further direct conflict between Rome and the Seleucids.

From the end of the Macedonian Wars until the early Roman Empire, the eastern Mediterranean remained a shifting network of polities. These varied widely in their relationship to Rome: some were independent, others dependent, and still others under outright military control. According to the historian Polybius, who aimed to explain how Rome came to dominate the Greek east in under a century, the wars with Greece began after several Greek city-states sought Roman protection against Macedonia and the Seleucid Empire. This request arose from a destabilizing situation created by the weakening of Ptolemaic Egypt.

Unlike the west, the Greek east had been dominated by major empires for centuries. Rome’s search for influence and alliances led to wars that further weakened these empires, creating an unstable power vacuum that only Rome could fill. This process had some important similarities to what had happened in Italy centuries earlier—but now on a continental scale. Historians view Rome’s growing influence in the east, as in the west, not as intentional empire-building but as constant crisis management. Rome focused on short-term goals within a highly unstable, unpredictable network of alliances and dependencies. With some major exceptions of outright military rule (such as parts of mainland Greece), the eastern Mediterranean remained an alliance of independent city-states and kingdoms—with varying degrees of de jure and de facto independence—until it transitioned into the Roman Empire. Only under the Roman Empire was the eastern Mediterranean, along with the entire Roman world, organized into provinces under explicit Roman control.

**First Macedonian War (214–205 BC)**

During the Second Punic War, Philip V of Macedon allied with Hannibal. Fearing that Macedon might reinforce Hannibal, the Roman Senate sent Marcus Valerius Laevinus with forces across the Adriatic. Roman maniples, aided by allies from the Aetolian League and Pergamon after 211 BC, did little more than skirmish with Macedonian troops and seize minor territory along the Adriatic coast, ostensibly to combat piracy. Rome’s goal was not conquest but keeping Macedon occupied while Rome fought Hannibal. The war ended indecisively in 205 BC with the Treaty of Phoenice. Though a minor conflict, it opened the door for Roman military intervention in Macedon. This war, though fought between Rome and Macedon, was largely independent of the later Roman-Macedon wars (which began with the Second Macedonian War and were closely linked to one another) in the following century.

**Second Macedonian War (200–196 BC)**

The previous century had seen the Greek world dominated by three major successor kingdoms of Alexander the Great’s empire: Ptolemaic Egypt, Antigonid Macedon, and the Seleucid Empire. The Seleucids’ imperial ambitions after 230 BC were particularly destabilizing. They set out to conquer Egypt, and the Ptolemies responded with a major mobilization. This campaign achieved military victory against Seleucid incursions, but in 205 BC, when Ptolemy IV was succeeded by the five-year-old Ptolemy V under a regency, revolts broke out in Egypt itself, leading to the secession of Upper Egypt. Seeing that the entire Ptolemaic realm could now be easily conquered, the Macedonians and Seleucids forged an alliance to conquer and divide the Ptolemaic empire between themselves.

This pact posed the most significant threat to the century-old political order that had kept the Greek world relatively stable. In particular, it threatened the smaller Greek kingdoms that had remained independent. Since Macedonia and the Seleucid Empire were the source of the threat, and Egypt was in turmoil, the minor Greek states turned to Rome for help. This diplomatic development marked a major shift: the Greeks had recently shown little but contempt for Rome, and Rome little but apathy toward Greece. Ambassadors from Pergamon and Rhodes presented evidence to the Roman Senate that Philip V of Macedon and Antiochus III of the Seleucid Empire had signed a non-aggression pact. Although the exact nature of this treaty and the precise Roman reason for intervening after decades of apathy toward Greece remain unclear—the relevant passages from Polybius, our primary source, have been lost—the Greek delegation was successful.