5 of the deadliest mercenary armies throughout history

Mercenaries are warriors who are paid for their martial services by a nation's leader or other "employer," and who get a little extra coin from the spoils of war. Most mercenaries once fought in professional armies before joining the…
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Mercenaries are warriors who are paid for their martial services by a nation’s leader or other “employer,” and who get a little extra coin from the spoils of war.


Most mercenaries once fought in professional armies before joining the motley ranks of private forces. They have no allegiance to a nation unless that nation pays well, and even that is transient.

But throughout history they’ve been seen as skilled warriors — albeit dubious about ethical conduct — and have proven effective for leaders who need an extra punch in an all out fight.

Here is a list of some of the most notable mercenaries in history:

5. The Apiru/Habiru

When the Amarna Letters were discovered, the world was introduced to a group of people the Egyptians called Apiru or, in Akkadian, “Habiru.”

The Habiru were described as a group of Asiatics wandering about the Levant, much like the Hebrews. The Sumerians were the first to mention this group as the SA.GAZ as far back as 2500 BCE. Hittite texts also refer to them as SA.GAZ. Texts found at Boghazkoi in Anatolia use both names, Habiru and SA.GAZ, interchangeably. The term also is associated with the Akkadian habbatu (“plunderer” or “robber”) or saggasu (“murderer”).

Instead, SA.GAZ means “one who smashes sinews;” this is typically in reference to a small band of soldiers who are employed as local mercenaries. This wandering body lived on the social fringes of civilization.

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The Habiru were indeed an enemy to many, but a useful and complex one.

The philosopher Martin Buber described them as, “…people without a country, who have dissociated themselves from their national connections and unite in common journeys for pasture and plunder; semi-nomadic herdsmen they are, or freebooters if opportunity offers.”

While it’s well documented that the Habiru were viewed as landless undesirables who at times served as mercenaries in military ranks throughout the Near East and Egypt, it was their civil skills that were often overlooked and most desired. While it is tempting to correlate the Habiru with the Bedouin, that’s not always accurate.

The Habiru traveled in much larger groups and their social structure was complex. They were highly skilled pastoral people who were tenders of cattle, vintners, stonecutters, stockbreeders, agriculturalists, merchants, construction workers, skilled government employees, and fishermen.

4. The Ten Thousand

Heroic march of the Ten Thousand Greek mercenaries. (Painting by Bernard Granville Baker (1870-1957)

The “Mighty” Ten Thousand were mentioned in Xenophon’s Anabasis. The Ten Thousand, according to Xenophon, were a mixed bag of motley Greek warriors hired by Cyrus the Younger to help oust his brother King Artaxerxes II from the Persian throne.

In 401 B.C., the hardened Greek veterans of the Peloponnesian War fought alongside Cyrus near Baghdad against the Persian forces led by Artaxerxes. While the Ten Thousand fought bravely, it was not enough; Cyrus was killed in the battle. Afterwards, Tissaphernes, a local satrap (governor), met with the Greek commanders to negotiate new terms, but Tissaphernes refused their services and they were murdered.

Once word of the event got out, the Greeks elected new leaders and fled.

As the forces of Artaxerxes were pursuing them, the Ten Thousand banded together and fought their way out of enemy territory. Once Xenophon had been elected as one of their new leaders, the mercenary army embarked on a grueling nine-month journey that took them from the province of Babylonia all the way to the Greek Black Sea port at Trapezus.

During their journey, they fought off bad weather, famine, ambushes, and hallucinogenic honey. Once back on friendly soil, only three-fourths of their numbers remained.

3. The Varangian Guard

Varangian Guardsmen, an elite unit that served as bodyguards for Byzantine Emperors. (Image: an illumination from the Skylitzis Chronicle)

The Varangians were an elite guard that one served as the personal bodyguards of Byzantine rulers from the 10th to the 14th centuries. When not protecting the ruler, they were sent to the front in times of war to protect and expand the borders of the Byzantine Empire.

The Varangians were Swedish merchants who penetrated eastern Russia. Their story begins in 874 when the Kievan Rus and Constantinople established a peace treaty in which the Kievan Rus was obliged to send the Byzantines military assistance, but it would not be for some time. The first appearance of Varangians acting in the interest of the Byzantine state was during the reign of Emperor Michael III (842–867), in which they served as his personal security entourage. This peace opened the door for the Kievan Rus not only economically but also militarily. The establishment of the Varangian guard as permanent security organization started in 911.

What made the guard so exceptional was their loyalty to the emperor. Of course, if one is being paid a substantial wage while allowing the best pickings of loot from pillage cities, ones loyalty is hard to sway. They were instrumental in keeping the empire together and requiring lost territory, but also in protecting the Byzantine throne. However, the Varangians’ time would soon end after the sacking of Constantinople in 1204 by Western Europeans during the Fourth Crusade; the Varangians never fully regained their once regal position and eventually faded away.

2. The White Company

John Hawkwood lead The White Company, a fighting unit shrouded in both myth and reality. (Image: Funerary Monument to Sir John Hawkwood by Paolo Uccello, 1436)

The famed mercenary leader John Hawkwood was in charge of the infamous White Company. The White Company was one of the most notorious mercenary groups of the so-called “free companies” to conduct warfare in 14th century Italy. The unit first rose to prominence in the 1360s under the leadership of Albert Sterz before falling under the command of Sir John Hawkwood. John Hawkwood was an Englishman who served in the English army during the Hundred Years’ War, and he was knighted for his service.

Once Hawkwood took command of the White Company, they soon became known as an elite (if not the elite) mercenary army in Italy. The cultural makeup of the White Company was an amalgamation of English, German, Breton, and Hungarian adventurers. These well-trained mercenaries provided a combined arms approach to warfare. Their swift tactics and willingness to fight in harsh conditions terrified opponents.

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What made the White Company so effective in 14th Century Italy is because Italia was fractured into many small provinces and city-states. Loyalties swayed as quick as the wind and because of this, Hawkwood saw the lucrative benefits awaiting him. From 1363 and 1388, Hawkwood’s While Company fought nearly nonstop, for and/or against the Papal States, the city of Milan, and the city of Florence.

1. Henry MacIver

Henry Ronald Douglas McIver (1841–1907) was a soldier of fortune who fought for 18 countries. (Image courtesy of Richard Harding Davis’ “Real Soldiers of Fortune”)

Most people have never heard of Henry MacIver had it not been for author Richard Davis and his book Real Soldiers Of Fortune published in 1906.

MacIver was born in Virginia in 1841. Much later in his life, his family sent him to finish his education with his uncle General Donald Graham. The reason for this is once MacIver had finished with school he would be sent to West Point. However, MacIver ditched West Point and joined the army of the East India Company. He was only 16 years old.

While with the East India Company, he would see his first action at age 17 during the Sepoy Mutiny. MacIver nearly died after being seriously wounded in the arm and head. Not long after, he made his way to Italy, where he fought alongside Giuseppe Garibaldi.

After mixed success, he found his way under the command of the Don Carlos, who was the pretender for the Spanish crown. In 1861, Civil War broke out in the United States and MacIver made his way to join the Confederacy, in which he served with distinction.

After the war was over, MacIver fled to Mexico and joined Emperor Maximilian and his war against the Juarez rebels. However, his fighting was short-lived. He was captured by Indians, but he would escape three months later and rejoin Maximilian’s forces. He would be given the title of Count for his valiant efforts on the field of battle at Monterrey.

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Soon after, the Juarez rebels won the war and executed Emperor Maximilian. MacIver fled for South America and laid low for a time.

When the Russo-Turkish War (1877–1878) broke out, MacIver made his way to the Balkans and offered his services to the Serbians. He was given the rank of colonel and led a company of volunteers but would soon rise to the rank of general and cavalry commander of the Serbian contingents. MacIver considered this the highest point of his career and was his happiest.

After Serbia, MacIver raised more volunteers and planned further expeditions in Central America. Before that could happen, however, he found himself serving as the United States Consul. He would offer his services once again to President McKinley during the Spanish-American War of 1898.

By this time, he had grown older and his services on the field of battle were not needed. MacIver would go on to find more lucrative enterprises elsewhere in the America’s but as Davis says, MacIver’s “…life is, and, from the nature of his profession, must always be, a lonely one. Still he has his sword, his blanket, and in the event of war, to obtain a commission he has only to open his tin boxes and show the commissions already won. Indeed, any day, in a new uniform, and under the Nineteenth Flag, the general may again be winning fresh victories and honors.”

MacIver would die the following year in 1907, but is remembered as a true soldier of fortune.