Long ago, two big armies met. 
Long ago, two big armies met. 

In November 333 BC, two great leaders met in battle. 
Darius tried to surprise Alexander. He marched his army behind the Greek lines. This move cut off Alexander's food and supplies. Alexander had to march south to meet him. 
The fight was very hard. Alexander led a charge with his cavalry. He aimed his attack directly at Darius. This caused the Persian king to flee. 
Alexander won a big victory. He captured the family of Darius. He also found the king's treasury. This win changed the power in the region. It was the first time Darius was defeated in person.
The Battle of Issus was a major clash in history. It happened on November 5, 333 BC. This battle took place in southern Anatolia. 
The battle was shaped by smart and risky moves. Alexander had been winning battles in Asia Minor. He wanted to take coastal towns to stop the Persian fleet. Meanwhile, Darius moved his large army into Syria. He took a northern route to surprise Alexander. 
Historians have long studied how these armies were set up. 

The fighting was very intense and difficult. At first, the Macedonian center struggled to cross the river. They faced strong Greek mercenaries on the other side. 
This victory had many lasting effects. Alexander did not just win a battle; he changed the map.
The Battle of Issus was a massive military clash in southern Anatolia. It took place on November 5, 333 BC. This engagement was a major event in Alexander the Great's invasion of the Persian Empire. It served as the first direct encounter between Alexander and the Persian King, Darius III. The battle resulted in a decisive victory for the Hellenic League, which Alexander led. This victory began to dismantle the power of the Achaemenid Empire. 
The conflict was shaped by strategic maneuvers and geography. Alexander had previously defeated Persian satraps at the Battle of the Granicus. He focused on capturing coastal settlements to neutralize the Persian fleet. While Alexander was in Tarsus, he learned that Darius was gathering a massive army in Babylon. Darius moved his forces into Syria toward a town named Sochoi. He chose a northern route to bypass the Pass of Jonah. This maneuver allowed the Persians to capture Issus and cut Alexander's supply lines. Alexander was forced to countermarch to meet this threat. 
The location of the battle played a vital role in the outcome. The fighting occurred on a narrow coastal plain near the Pinarus River. Historians have debated the exact location of this river for many years. Some believe it was the Deli Tchai, but others, like N.G.L. Hammond, argue it was the Payas River. The geography near the Gulf of Issus was very constricted. The distance between the gulf and the surrounding mountains was quite small. This narrowness prevented Darius from using his superior numbers to surround the Greeks. 
Estimates of the army sizes vary significantly among historical sources. Ancient writers like Arrian suggested the Persian army had 600,000 soldiers. However, modern historians find such high numbers unlikely due to logistics. Most experts estimate Darius had roughly 100,000 men. This total included 11,000 cavalry, 10,000 Persian Immortals, and 10,000 Greek mercenaries. In contrast, the Hellenic army was much smaller. It likely consisted of about 40,000 men. This included 24,000 heavy infantry, 13,000 light infantry, and 5,850 cavalry. 
The tactical arrangement of the troops determined the flow of combat. Darius placed his heavy cavalry near the coast on his right flank. He positioned Greek mercenaries in his center to protect his position. Alexander led his Companion cavalry on the right wing. He placed Parmenion in command of the left wing. The Persian cavalry initially charged Parmenion's forces to open the battle. At the center, the Macedonian phalanx struggled to cross the river and climb fortified banks. They faced heavy resistance from the Greek mercenaries stationed there. 
The battle reached a turning point through a calculated strike. Alexander's Hypaspists, a unit of elite infantry, managed to punch a hole in the Persian line. Alexander then mounted his horse and led the Companion cavalry in a direct assault. He targeted Darius III and his royal bodyguards personally. This aggressive move caused Darius to flee the battlefield. When the Persian troops saw their king retreating, they lost their resolve. The Persian army broke and fled in a full rout. 
The aftermath of the battle changed the course of history. It was the first time a Persian army was defeated with the King present. Alexander captured the royal treasury and the family of Darius. This included his mother, Sisygambis, his wife, Stateira I, and his daughters. Alexander treated these captured women with great respect. This victory marked the beginning of the end for Persian dominance in the region. The loss of power at Issus eventually allowed Alexander to continue his conquest of the empire.
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