Philip II of Macedon

Philip II of Macedon is presented not as a fully narrated protagonist but as a historical exemplar of state-building through military organization. His importance lies in the connection between disciplined national arms and durable conquest: the book invokes his methods when explaining how a prince or republic should organize forces, and places him among the rulers whose military arrangements made later expansion possible.

Identity and Historical Position

Philip II of Macedon is identified as the father of Alexander the Great. The reference is brief but strategically placed: the author turns to Philip when discussing the practical formation and deployment of a national army, making him a precursor whose achievement belongs less to a single battlefield than to the construction of the military capacity on which a larger power could rest.

His appearance also links two different arguments in the book. In the discussion of Alexander the Great’s conquest of Asia, Alexander’s success is explained partly by the political structure of the kingdom he conquered: after Darius III was defeated and died, the centralized character of the realm made it easier to secure. In the later discussion of military institutions, Philip supplies the corresponding lesson from the conqueror’s side. Alexander’s empire could expand because Macedonian power had been organized before the conquest, rather than improvised after victory.

Military Organization and National Arms

The book names Philip II of Macedon among the princes whose example can reveal the rules for organizing a national army. National arms are defined as forces composed of subjects, citizens, and dependents, in contrast to mercenary or auxiliary troops. The underlying principle is that a principality cannot be secure when its defensive strength belongs to outsiders or rests only on Fortune; its ruler must possess forces capable of defending it in adversity.

This reference gives Philip a practical significance. He represents the ruler who arms and disposes forces according to a coherent system, rather than delegating the state’s survival to hired captains. Mercenary commanders may pursue their own advancement, while auxiliary troops remain united under foreign officers and can become dangerous immediately after victory. By contrast, forces bound to the prince’s own state provide a direct foundation for authority. Philip’s example therefore stands within the book’s wider contrast between military dependence and political self-command.

The argument is reinforced by the examples surrounding him. The Carthaginians were nearly ruined by hired troops; Philip of Macedon, after being appointed captain by the Thebans, won a victory and then deprived them of their liberty; Francesco Sforza defeated the Venetians for the Milanese and subsequently combined with the enemy against those who had employed him. These cases show why military success alone is not enough. The decisive question is who owns the force, who commands it, and whose interests it ultimately serves. Philip is cited as part of the alternative: a prince’s military arrangements should convert force into secure political capacity rather than leave power in the hands of a potentially autonomous commander.

Connection with Alexander the Great

Philip’s clearest narrative function is preparatory. Alexander the Great conquered Asia in a few years and died before fully entering into possession of it, yet his successors retained the kingdom because Darius III’s state had been governed in a centralized manner. Its disorders arose from the ambition and mutual jealousy of Alexander’s successors, not from the resistance of independent barons or surviving local dynasties.

The contrast between Philip and Alexander is therefore one of institutional foundation and visible achievement. Alexander is the conqueror whose success is examined; Philip is the earlier builder whose military example helps explain how such success could become possible. The book does not describe Philip’s campaigns, reforms, or personal character in detail. It does, however, place him at the point where military practice becomes a durable instrument of rule: the organization of forces precedes conquest, while the character of the conquered government determines whether conquest can be retained.

The same comparative logic distinguishes Alexander’s achievement from that of Pyrrhus and other conquerors. The author insists that differences in the durability of conquests do not arise simply from the greater or lesser merit of the conquerors, but from the different kinds of states they attack. Philip’s inclusion in the military discussion adds another variable: the kind of army with which a prince acts. Political structure on the conquered side and military organization on the conquering side together shape the outcome.

Political Significance

Philip II of Macedon embodies the book’s preference for national arms, foresight, and preparation. A prince who neglects military art risks losing his dominion, while proficiency in it can raise a man from private station to princely power. The book later uses Francesco Sforza to illustrate the latter movement, but Philip belongs to the same chain of reasoning: durable political authority depends on the ability to command organized force rather than merely borrow it.

His significance is consequently less biographical than exemplary. He is a model invoked to support a general rule about the relation between war and government. Military institutions are not treated as an accessory to sovereignty; they are among its foundations. By naming Philip alongside other successful rulers and republics, the author presents Macedonian military organization as evidence that political security is made, trained, and maintained through forces rooted in the ruler’s own polity.