Conquests of Alexander the Great
A young Macedonian king storms out of Europe and topples the greatest empire the world has ever seen, forging a legacy in blood, ambition, and fire from the Hellespont to the Indus.

Quick Facts
- Period
- -334 - -323
- Region
- Europe/Asia/Africa
- Casualties
- Estimated 100,000–200,000 military and civilian deaths across three continents.
- Outcome
- The Persian Empire collapses. Alexander's sudden death leaves his vast conquests divided among his generals, reshaping the map of three continents.
- Key Figures
- Alexander the Great, Darius III, King Porus +2 more
Key Figures
Alexander the Great
King and Commander-in-Chief
MacedonAlexander of Macedon, known to history as Alexander the Great, was a man driven as much by his inner tumult as by the ex...
Darius III
Great King of Persia
Achaemenid PersiaDarius III, the final sovereign of the Achaemenid dynasty, stands as one of history’s most enigmatic and tragic rulers—a...
King Porus
Indian King
Paurava KingdomKing Porus, also known as Purushottama, emerges from the mists of ancient Indian history as a figure defined as much by ...
Memnon of Rhodes
Mercenary Commander
Achaemenid PersiaMemnon of Rhodes stands out in the annals of ancient warfare as a figure both brilliant and contentious—a consummate mer...
Parmenion
Senior General
MacedonParmenion stands as one of the most complex and tragic figures of Alexander the Great’s era—a man whose formidable talen...
The Story
This narrative combines documented history with dramatized scenes for storytelling purposes.
Tensions & Preludes
The world of the mid-fourth century BCE simmered with rivalries and ambition. In the north, the kingdom of Macedon had emerged from obscurity, forged into a wea...
Spark & Outbreak
Dawn broke with a chill wind as Alexander’s army assembled on the shore of the Hellespont. Armor steamed with morning frost, breath hung in the air, and the met...
Escalation
The campaign’s pace quickened as Alexander marched inland, leaving behind the smoldering ruins and uneasy alliances of the coast. At Gordium, among the tangled ...
Turning Point
The monsoon rains fell heavy as Alexander’s army pressed into the Punjab, turning each march into an ordeal of mud and misery. The heavens opened in relentless ...
Resolution & Aftermath
CHAPTER 5: Resolution & Aftermath Babylon, 323 BCE. The city’s ziggurats towered over a landscape scarred by war. Ash and dust drifted in the thick summer air,...
Timeline
Death of Alexander
Alexander dies in Babylon at the age of thirty-two, likely from fever. His sudden death triggers the fragmentation of his empire and the wars of the Diadochi.
Location: Babylon, Iraq
Battle of the Hydaspes
Alexander defeats King Porus in a brutal engagement featuring war elephants. The battle is costly and marks the easternmost extent of the Macedonian advance.
Location: Hydaspes River, Punjab, India
Invasion of India
Alexander leads his army into the Indian subcontinent, facing new enemies and unfamiliar terrain. The campaign stretches Macedonian endurance to the breaking point.
Location: Indus Valley, Pakistan
Burning of Persepolis
Alexander’s army loots and burns the Persian ceremonial capital of Persepolis. The destruction is both retribution and a symbol of the end of the Achaemenid dynasty.
Location: Persepolis, Iran
Assassination of Darius III
Darius III is betrayed and murdered by his own satrap, Bessus, during his flight from Alexander. The death marks the end of the Achaemenid dynasty.
Location: Bactria, Afghanistan
Battle of Gaugamela
The decisive battle of the campaign, where Alexander’s forces shatter the Persian army and Darius III flees once again. The victory signals the collapse of organized Persian resistance.
Location: Gaugamela, Iraq
Siege of Tyre
After a seven-month siege, Tyre falls to Alexander. The city’s population is massacred or enslaved, and survivors are crucified along the shore.
Location: Tyre, Lebanon
Siege of Gaza
Gaza resists Alexander’s advance and is subjected to a brutal siege and massacre following its fall. The conquest secures the route to Egypt.
Location: Gaza, Palestine
Battle of Issus
Alexander’s army confronts and routs Darius III’s much larger force at Issus. The Persian royal family is captured, and Darius flees the battlefield.
Location: Issus, Turkey
Crossing the Hellespont
Alexander’s army crosses from Europe into Asia, symbolically launching the invasion of the Persian Empire. The crossing marks the beginning of the campaign that will reshape the ancient world.
Location: Hellespont (Dardanelles), Turkey
Battle of the Granicus
Alexander defeats a Persian force at the River Granicus in a bloody engagement. The victory opens the gates of Asia Minor and demonstrates Macedonian military superiority.
Location: Granicus River, Turkey
Siege of Miletus
Macedonian forces storm the city of Miletus after fierce resistance. The sack of the city is marked by massacre and looting, setting a brutal precedent for the campaign.
Location: Miletus, Turkey
Sources
- wikipediaAlexander the Great
General biography and overview of the campaigns.
- wikipediaConquests of Alexander the Great
Campaign chronology and major battles.
- bookThe Campaigns of Alexander
Primary ancient source by Arrian.
- encyclopediaFrom Persia to India: Alexander the Great's Campaigns
Britannica summary of the eastern campaigns.
- encyclopediaA History of the Ancient World
Contextual history of Alexander and his era.
- websiteThe Wars of Alexander the Great
BBC historical overview.
- bookThe Age of Alexander: Ten Greek Lives
Plutarch’s biographies, including Alexander and his contemporaries.
- websiteAlexander the Great (documentary)
History Channel’s documentary resources.
- documentaryIn the Footsteps of Alexander the Great
BBC documentary series following Alexander’s route.
Connected Across The Archives
Explore specific connections to other archives—civilizations, dynasties, companies, and treaties that share history with this conflict.

Civilization Archive
(5)Achaemenid Persian Empire
Alexander's conquest of the Achaemenid Empire dismantled a vast Persian power, altering the political and cultural landscape of the ancient world.
Ancient Greek Civilization
Rooted in Greek philosophy and military innovation, Alexander's conquests disseminated Greek culture, affecting governance and warfare strategies across the ancient world.
Ayyubid Dynasty
The Ayyubid Dynasty, established by Saladin, capitalized on the fragmented post-Alexandrian territories, reshaping the Middle Eastern political and military landscape.
Byzantine Empire
The Byzantine Empire, a successor of Alexander's Hellenistic influence, inherited and transformed Greco-Roman traditions, shaping medieval European and Middle Eastern history.
Hellenistic Civilization
Alexander's campaigns spread Greek ideals and art, fostering a Hellenistic culture that blended Eastern and Western influences, reshaping societies across three continents.

Treaty Archive
(2)Peace of Callias
The Peace of Callias, resolving Greek-Persian conflicts, indirectly facilitated Alexander's campaigns by stabilizing the region, allowing focus on his expansive conquests.
Treaty of Kadesh
The Treaty of Kadesh, an early diplomatic milestone, exemplified empire governance strategies that influenced Alexander's diplomatic and administrative approaches.
Explore Related Archives
Wars reshape borders, topple dynasties, and transform civilizations. Explore the broader context of history's conflicts.
