Defeating the Greeks

War & Diplomacy

Chandragupta's greatest military test comes from the west: Seleucus Nicator, heir to Alexander's eastern empire, invades to reclaim lost provinces. The resulting war ends not in continued conflict but in a remarkable treaty, India gains Afghanistan, Baluchistan, and parts of Persia, while Seleucus sends an ambassador whose writings become our best Greek account of ancient India.

The Successor's Ambition

By 305 BCE, Chandragupta Maurya had consolidated his empire across northern India. But a new threat emerged from the west. Seleucus Nicator, one of Alexander's generals, had carved out the largest portion of the Macedonian empire and now turned his attention eastward.

Seleucus was no minor threat:

• He controlled territory from Anatolia to Central Asia
• He commanded battle-hardened Macedonian veterans
• He claimed legal right to all territories Alexander had conquered
• He had just defeated his rival Antigonus, freeing forces for eastern campaigns

The provinces that Chandragupta had liberated, Gandhara, Arachosia, and parts of the Indus valley, were, in Seleucus's view, rightfully his.

The Invasion

In 305 BCE, Seleucus crossed the Hindu Kush with a massive army. Greek sources are frustratingly vague about what followed, but the outlines are clear:

Seleucus invaded with confidence. He had the finest army in the western world, the military system that had conquered Persia and reached India under Alexander himself.

But Chandragupta was not Porus. He commanded an empire, not a single kingdom. His army was larger, his resources deeper, and his strategy refined through years of successful campaigning.

The Campaign

Details of the fighting are lost, but the outcome speaks volumes. The war lasted approximately two years, and when it ended:

• Seleucus had not advanced into the Gangetic heartland
• Chandragupta's forces remained intact and formidable
• Both sides recognized that continued war served neither's interests

The Mauryan army that faced Seleucus was formidable:

These numbers come from Greek sources (Megasthenes and later Pliny) and may be exaggerated, but they indicate that Chandragupta commanded resources far beyond what Seleucus could match in a prolonged campaign.