How did a 50,000 strong Persian army suddenly vanish?

Lost army of Cambyses
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Over 2,500 years ago, a force of 50,000 Persian soldiers marched into the unforgiving sands of Egypt's Western Desert, never to be seen again.

 

Their mission was to crush a rebellious oracle in the distant Siwa Oasis, but instead, they vanished, swallowed by a cataclysmic sandstorm—or so the story goes.

 

But what really happened to Cambyses' Lost Army?

 

Was it truly obliterated by a desert storm, as the ancient historian Herodotus claimed?

 

Or is the entire tale a myth, a cautionary fable of imperial hubris and the merciless power of nature? 

Why were the Persians in Egypt?

The Achaemenid Empire, also known as the First Persian Empire, was a vast and powerful civilization that spanned three continents at its height.

 

Founded by Cyrus the Great in the 6th century BC, the empire was known for its military might, administrative efficiency, and cultural diversity.

 

It was within this backdrop that Cambyses II ascended to the throne in 530 BC, following the death of his father.

Cambyses II, like his father, was an ambitious ruler. His reign was marked by a series of military campaigns aimed at expanding the boundaries of the Persian Empire.

 

One of his most notable conquests was the invasion of Egypt in 525 BC, which marked the beginning of Persian rule in the region.

 

Egypt, with its rich history, abundant resources, and strategic location, was a prized possession for any empire.

 

However, the task of subduing and governing this ancient land was not without its challenges.

The political and geographical landscape of Egypt during Cambyses II's invasion was complex.

 

The Nile River, with its annual floods, provided a lifeline for agriculture but also posed significant challenges for military movements.

 

The vast deserts surrounding the Nile Valley were inhospitable and perilous, known for their harsh conditions and treacherous sandstorms.

 

The Siwa Oasis, located in the Western Desert, was particularly isolated and difficult to reach.


What do we know about the missing army?

The story of the Lost Army of Cambyses begins with a bold and ambitious mission. In the aftermath of his successful invasion of Egypt, Cambyses II set his sights on the Siwa Oasis, home to the Oracle of Amun.

 

This religious sanctuary, revered by the Egyptians and Greeks alike, had defied the Persian king by refusing to legitimize his rule.

 

In response, Cambyses II dispatched a force of 50,000 soldiers to destroy the oracle and assert his authority.

 

The expedition was a significant undertaking. The soldiers had to traverse hundreds of miles of harsh, unforgiving desert, with limited access to water and supplies.

 

Despite these challenges, the army set off from Thebes, the capital of Upper Egypt, with high spirits and a clear mission.

 

However, according to Herodotus, the Greek historian who provides the only detailed account of the event, the army never reached its destination.

How was it explained at the time?

The disappearance of Cambyses' army is one of the most enduring mysteries of ancient history.

 

According to Herodotus, as the army was crossing the desert, a massive sandstorm arose, engulfing the soldiers and burying them beneath the sands.

 

When the storm subsided, there was no sign of the army - no men, no equipment, no trace of their passage.

 

They had vanished as if they had never existed.

The aftermath of this event had significant implications for Cambyses II's reign and the Achaemenid Empire.

 

The loss of such a large force was a severe blow to the Persian king, both militarily and psychologically.

 

It also served as a stark reminder of the harsh realities of desert warfare and the limits of imperial power.

Egyptian western desert
© History Skills

Archaeological searches for evidence of the army

The search for tangible evidence of Cambyses' Lost Army has captivated archaeologists and historians for centuries.

 

Despite the passage of over two millennia, the hope of uncovering clues about the fate of the 50,000 Persian soldiers has spurred numerous expeditions and excavations in the Western Desert of Egypt.

 

Early archaeological efforts were largely fruitless, hampered by the vastness of the desert and the lack of precise information about the army's route.

 

The story of the Lost Army, as told by Herodotus, offered few concrete details that could guide these investigations.

 

Moreover, the harsh desert conditions and shifting sands posed significant challenges for preservation and discovery of ancient artifacts.

A breakthrough came in the 1930s with the discovery by Hungarian explorer Count László Almásy, who found artifacts in the desert that he believed were linked to the Lost Army.

 

However, his findings were controversial and met with skepticism from many in the academic community.

 

The artifacts were not definitively Persian, and there was no consensus on whether they could be reliably associated with Cambyses' ill-fated expedition.

 

In recent years, new excavations and technologies have breathed fresh life into the search.

 

In 2009, an Italian archaeological team led by Professor Angelo and Alfredo Castiglioni announced the discovery of a collection of Persian-era artifacts in the Western Desert, including weapons, jewelry, and pottery.

 

They claimed these artifacts were evidence of Cambyses' Lost Army, suggesting that the soldiers might have been caught in a sandstorm and perished from thirst.

However, these findings have also been met with debate and controversy. Some scholars argue that the artifacts could have come from other Persian military activities in the region, not necessarily the Lost Army.

 

Others question the interpretation of the evidence, pointing out that a single sandstorm is unlikely to have wiped out an entire army.

Skull of an ancient Persian soldier
© History Skills

What if it wasn't destroyed by a sandstorm?

One of the most recent and controversial claims was made by a Dutch archaeologist named Olaf Kaper, who announced in 2014 that he had solved the mystery of the lost army.

 

Kaper argued that the army was not buried by a sandstorm but was defeated and destroyed by an Egyptian rebel leader named Petubastis III, who had proclaimed himself pharaoh in 522 BC.

 

Kaper based his theory on inscriptions he found at the Dakhla Oasis, about 200 km south of Siwa, which mentioned a large battle between Petubastis and Cambyses around that time.

 

Kaper suggested that Cambyses had sent part of his army to suppress the rebellion, but they were ambushed and annihilated by Petubastis' forces.

 

Kaper also claimed that Herodotus had fabricated or exaggerated the story of the sandstorm to cover up the humiliating defeat of the Persians.

However, Kaper's theory has been met with skepticism and criticism by other scholars, who have pointed out several flaws and inconsistencies in his argument.

 

For example, some have questioned the reliability and interpretation of the inscriptions he used as evidence, noting that they do not mention Cambyses or his army by name, and that they could refer to a different event or location.

 

Others have challenged the chronology and logistics of Kaper's scenario, arguing that it is unlikely that Cambyses would have sent such a large force so far away from his main base in Memphis, or that Petubastis would have been able to muster such a large and effective army in such a short time.


How much can we trust Herodotus?

The story of the Lost Army of Cambyses, as fascinating as it is, has been a subject of intense debate and controversy among historians and archaeologists.

 

The primary source of information about the army's fate is the account of Herodotus, the ancient Greek historian.

 

However, Herodotus' reliability as a historian has often been called into question, with some scholars labeling him more of a storyteller than a chronicler of factual events.

 

His account of the sandstorm that supposedly swallowed the entire Persian army is particularly contentious.

One of the main debates revolves around the authenticity of Herodotus' account. Did a sandstorm truly engulf and obliterate an entire army of 50,000 men?

 

While sandstorms are a common occurrence in the Western Desert and can indeed be deadly, the likelihood of one wiping out an entire army and leaving no trace behind is a point of contention.

 

Some scholars argue that Herodotus may have been repeating a local legend or using poetic license to explain the army's disappearance.

Some historians argue that the story may have been a fabrication or exaggeration, possibly created as a propaganda tool or a moral tale about the dangers of hubris and overreaching ambition.

 

Others, however, believe that there is a kernel of truth in the story, even if the details have been embellished or misinterpreted over time.

The mystery of the lost army of Cambyses remains unsolved to this day.

 

Until more conclusive evidence is found, we can only speculate about their fate and wonder what secrets they may still hold beneath the sands of the desert.