The late medieval period was a chaotic time in history. England and France were engaged in the Hundred Years’ War, and Italian city‑states were fighting one another for supremacy in the peninsula. In the absence of permanent standing armies, combatants relied on mercenary companies to do the fighting for them. The temporary peace brought about by the Treaty of Bretigny in 1360 unleashed thousands of unemployed men‑at‑arms looking to pillage to sustain themselves. Many coalesced around charismatic and intrepid leaders into what became known as “free companies.” In Italy, they were known as condottieri. This word is derived from condotta, meaning “contract,” the instrument by which they put themselves in the service of the highest bidder. These soldiers of fortune were the late medieval version of Mafia bosses, making their living with murder, extortion, and terror.

Why These 10 Swashbuckling Mercenaries Matter

Each of the ten figures below earned a reputation for ruthless efficiency, flamboyant bravado, and a willingness to switch sides for the right price. Their stories illuminate the chaotic world of medieval warfare and the shadowy economy of hired swords.

10 Roger de Flor

Roger de Flor was born in the then‑Catalonian province of Brindisi, Italy in 1267. As a boy he went out to sea and eventually became a Knight Templar. He took advantage of the Muslim capture of Acre in 1291 by robbing the refugees, and when his activities were exposed, he was expelled from the Templars. Fleeing to Genoa, he became commander of a force of Spanish mercenaries called Almogavares. Their name was derived from the Arab al‑mogauar, meaning “one who devastates,” and they were the descendants of the Iberians who accompanied Hannibal into Italy. In the seventh and eighth centuries they engaged in guerrilla operations against the Muslim invaders of Spain.

In 1303 the Byzantines recruited Roger, who was then in the service of the king of Aragon, to help fight the Ottoman Turks who had just wrested Bithynia from the Empire. In Constantinople Roger married a niece of Emperor Andronicus II Palaeologus and was made a grand duke. With 1,500 knights and 4,000 Almogavares called the Catalan Company, Roger won battles against the Turks, but he also pillaged and looted the Byzantine inhabitants of Anatolia in what is now Turkey. This led the authorities to denounce him as nothing better than a brigand, but success swelled his ego and he began dreaming of carving his own dominion in Anatolia.

Emperor Michael IX became convinced that Roger and his undisciplined Almogavares must be destroyed. In 1305 Roger was lured to Adrianople for a banquet hosted by Michael. There he was ambushed by another mercenary force and killed, along with 130 of his men. The remnants of the Catalan Company ravaged the countryside in revenge before settling in Greece and founding the Duchy of Athens in 1311.

9 Bascot de Mauleon

Bascot de Mauleon was captain of a group that marched into Burgundy with freebooters of various nationalities. Mauleon had his first experience of battle at Poitiers. Later he went to Prussia with the Count of Foix, crushing the peasant rebellion of the Jacquerie upon his return to France.

Mauleon estimated that about 12,000 men rode with him in the Loire region. This formidable force seized the castle of Brignais from the king and defeated the constable of France, amassing such wealth in ransoms and booty that the pope in Avignon feared for his safety.

Technically Mauleon fought for the king of England, but as an independent freebooter his main interest was money. Before he made it to the big time, Mauleon remembered, “Sometimes I have been so thoroughly down that I hadn’t even a horse to ride, and at other times fairly rich, as luck came and went.” His rags‑to‑riches tale was recorded by the French chronicler Froissart, who met him at a hostel in the Pyrenees. Froissart recalled, “He arrived with plenty of followers and baggage… He had as many pack horses with him as any great baron, and he and his people took their meals off silver plate.” Not a bad lifestyle for a highwayman.

8 Duke Werner von Urslingen

Taking upon himself the title of “Duke,” Werner von Urslingen stitched onto his doublet the motto “the enemy of pity, of mercy, and of God,” and lived up to it in the most horrific ways possible. Werner’s modus operandi was invading peaceful regions and robbing, raping, and killing the inhabitants before torching their property. He trumpeted his atrocities to authorities and threatened more unless he was paid, extorting vast sums from Siena, Perugia, Florence, and Bologna. In 1339 Werner and his band were denounced as “a plague of society.”

Werner founded the Great Company in 1342. At its height it numbered 6,000 men, mainly armored cavalry. He imposed strict discipline and a code of laws upon his men, including equal division of income. Later mercenary armies sought to model themselves after the powerful Great Company.

In 1347 Werner supported Queen Joanna I of Naples, sister‑in‑law of King Louis I of Hungary, after Louis invaded Naples to avenge his brother’s murder. Werner helped Joanna return to Naples and defended her against the opposing condottiere. On Joanna’s behalf Werner attacked the baronage of Meleto, raking in half a million florins’ worth of booty. Eventually both Werner and Wolfart were bought off, and Werner returned to Germany with his loot.

7 Conrad Of Landau

The German Conrad of Landau took command of the Great Company in 1354, operating in Tuscany, Umbria, the Romagna, and Lombardy. He held entire cities for ransom and reaped massive profits. As Conrad bluntly told a papal legate before invading church lands, “It is our custom to rob, sack, and pillage whoever resists. Our income is derived from the funds of the provinces we invade; he who values his life pays for peace and quiet from us at a steep price.”

On one occasion Conrad was ambushed by the Florentines on his way to Siena to fight Perugia. He was unhorsed and wounded, his force routed, and angry locals looted the remnants of the Company. It was a temporary setback, but Conrad continued to rake in vast revenues, enabling his father in Germany to buy back the family castle and lands lost to debt.

The Great Company was eventually hired by the Visconti rulers of Milan to drive away the rival White Company of Albert Sterz. In 1363 the two companies met at Canturino. Conrad held his line until his Hungarian contingents refused to fight fellow Hungarians in the opposing army. Their desertion tipped the scales to the White Company, and Conrad was killed in the ensuing battle.

6 Albert Sterz

The most infamous brigand group of all is the White Company, founded by the German Albert Sterz. It got its name from the white surcoats worn by its troops and the white banners they flew. Under Sterz, the Company was unmatched in efficiency. Its 3,500 horsemen and 2,000 infantry were impeccably organized and well equipped. Engineers even laid mines and built scaling ladders and siege towers within its ranks.

In 1360 Sterz moved the Company to Italy, the fertile field of constantly warring city‑states. Along the way he recruited an English knight named John Hawkwood, who swiftly rose through the ranks because of his negotiating skill. Sterz soon regretted his decision. Hawkwood’s men impressed him, deposed Sterz and gave command to the Englishman. The jealous Sterz sulked, biding his time for payback.

The Company drew up a contract with Pisa to attack rival Florence. The city was prepared, and Hawkwood’s attack stalled. Sterz seized his moment, switched sides, and carried his loyal men over to the Florentines. The White Company disintegrated, leaving Hawkwood with only 800 men. After the war Sterz merged the remnants with the German condottiere Hannekin Baumgarten, forming the Company of the Star, which enabled Sterz to crush Hawkwood.

5 Alberico de Barbiano

Alberico de Barbiano, a native of Cotignola in Romagna, began his career as a captain in the service of Milan. Later he was employed by Florence, Venice, Naples, and the papacy. Alberico’s most infamous moment came in 1377, when he participated in the horrific Massacre of Cesena, a town not far from his home, as captain of the forces under Cardinal Robert of Geneva (later anti‑pope Clement VII). Ordered by Pope Gregory XI to subdue the rebellious towns of Romagna, Cardinal Robert employed Breton mercenaries, “the most cruel and bestial seed of France.” Even after the townspeople surrendered their weapons, the inhabitants of Cesena were slaughtered in a three‑day bloodbath, their corpses left to be devoured by dogs.

In 1378 Alberico formed the Company of St. George, composed entirely of Italians who swore “hatred and eternal enmity” toward all foreigners. He turned against Clement VII and defeated his Breton force on behalf of Pope Urban VI, who proclaimed Italy “free of barbarians.” Yet the anti‑foreigner sentiment was empty bombast. After expelling the Bretons, Alberico began plundering Tuscan towns. His new band, the Company of the Hook, included Germans, Hungarians, and perhaps inevitably, Bretons.

At the close of the 14th century Alberico fought in wars between Florence and Milan, switching sides as it pleased him. He served Naples in the twilight of his career and died in 1409. Alberico is credited with military innovations such as improved armor and aggressive cavalry charges. His practice of recruiting troops from his own Romagnan feudatories, creating greater cohesion, is seen by some as a precursor to the eventual unification of Italy in the 19th century.

4 Muzio And Francesco Sforza

Muzio Attendolo was the first prominent member of the family that would later rule Milan. He hailed from Cotignola in Romagna and served under Alberico de Barbiano before striking out on his own. Alberico dubbed him Sforza, meaning “force,” and as an independent condottiere he made it his nom de guerre.

In 1398 Muzio entered the service of the Visconti rulers of Milan but soon departed to fight for Florence and then Ferrara. By 1412 Naples secured his services, and Muzio became constable of the kingdom. He endured a roller‑coaster career during the chaotic reign of Queen Joanna II, alternating between rewards of lands and offices and periods of imprisonment and torture. In 1424 Muzio drowned in a river while campaigning against a fellow condottiere.

Like a medieval Michael Corleone, Muzio’s son Francesco took up his father’s mantle and became the most successful mercenary captain of the 15th century. Francesco served the Visconti against Venice, then Venice against the Visconti, attacked the pope, then defended him. To bind Francesco permanently to Milan, Duke Filippo Visconti married him to his only daughter in 1441. Expecting to inherit the dukedom, Francesco was thwarted when Milan declared a republic. He besieged Milan and seized the title by force in 1450 – the Sforza name was earned.

3 Rodrigo de Villandrando

Many mercenaries were not averse to robbing their own employers. This was the case with Rodrigo de Villandrando, one of the greatest mercenaries of his era. Rodrigo was born in Castile in 1380. Seeking a military career he traveled to France and first joined the mercenary army of Amaury de Severac and the Burgundians.

Rodrigo formed his own mercenary company in 1420 and offered his services to the French Dauphin Charles. He extorted money from the cities and estates of Languedoc and pillaged the countryside, all within Charles’ realm. When Charles ordered him to attack the English, Rodrigo refused and instead went to Toulouse, recruiting more men. He eventually attacked English‑held Bordeaux and was pardoned by Charles. In a later battle at Anthon his 400 men defeated the Burgundians; one enemy soldier hid in a hollow tree, only to be crushed by his own armor. The tree was cut down in 1672, revealing his skeleton.

At his peak Rodrigo commanded 10,000 men, exacting ransoms from nobles and demanding “protection money” from locals who wished to avoid murder and pillage. His violent forays in Gascony earned him the title “Emperor of Pillagers.” Enriched, he retired in the 1440s, returned to Castile, willed his wealth to a monastery, and died in 1457.

2 Arnaud de Cervole

Born into a minor noble Gascon family, Arnaud de Cervole was the archpriest of Vélines in the diocese of Périgueux. Being a man of God didn’t stop him from mixing with brigands and men of base extraction. Deprived of his benefice by the bishop of Bordeaux, he turned to full‑time brigandage, specializing in stealing castles. At one point Arnaud and his band seized three castles in Angoulême as security until their employer paid their wages. The French crown charged him with theft when he took over a castle in Normandy, though he was then in the service of King Jean II.

After Jean II’s capture at Poitiers, Arnaud lost his patron and turned to pillaging, establishing a protection racket in the wealthy, peaceful region of Provence. He approached Avignon, terrifying the pope into a shakedown. Froissart records, “He entered Avignon with most of his followers by friendly agreement, and was received with as much respect as if he had been the king of France’s son, and dined several times with the pope and the cardinals. All his sins were remitted and when he left he was given 40,000 crowns (20,000 gold florins) to distribute among his companions.”

Shifting operations to Burgundy, Arnaud seized castle after castle until the count bought him off for 2,500 gold francs. In 1365 Pope Urban V recruited Arnaud to lead a crusade against the Turks, but the true aim was to move the freebooters away from the Rhône. Arnaud’s army reached Lyon but refused to march on. Unfed and unpaid, his men quarreled with him, which ended in his murder.

1 Sir John Hawkwood

Despite leading the murderous White Company, Sir John Hawkwood died a fairly rich man and was even honored by an equestrian fresco in the Florence Cathedral. The memorial was a personal affront to Victorian author Ferdinand Gregorovius, who lamented, “Florence, who denied Dante a resting place, erected a noble monument to a robber.”

Born to a minor Essex landowner, Hawkwood left for France to fight for Edward III at age 18. He was knighted for his role in the English victory at Poitiers, but after the Treaty of Bretigny he was left a poor knight without a job. He joined the Free Companies to support himself.

As a soldier of the king Hawkwood was an unknown, but as a freelancer he achieved astounding success. Seeking his fortune in the medieval snake pit of Italy, he became leader of the White Company, which terrorized Italy and earned a reputation as “perfidious and most wicked.” The only consolation was that “they did not mutilate or roast their victims like the Hungarians.” The locals called Hawkwood’s force “devils in human shape.”

Over the next thirty years Hawkwood’s business of murder, pillage, and blackmail prospered. His fighting skill was coveted by the pope, Florence, Milan, Pisa, and Perugia. Because his loyalty was only to money, he betrayed each client when a juicier offer appeared. Florins flowed so freely into his coffers that he rivaled banks and trading houses. The White Company employed lawyers and notaries to keep records of bribes and ransoms, accountants and secretaries to divide the plunder, and brokers to sell each soldier’s share.

Hawkwood became so influential that he arranged the marriage of Edward’s third son, Lionel, to the daughter of the Duke of Milan. He himself married the duke’s 17‑year‑old daughter when he was 57. Florence offered the richest rewards, and he ended his days as a general of the Florentines, instrumental in creating their republic. When he died in 1394, he was remembered as “the ablest military commander of the Middle Ages.”

It’s often said that prostitution is the world’s oldest profession. If that claim holds water, then the second‑oldest trade must be that of the soldier‑for‑hire. Mercenaries have peppered every battlefield for millennia, and even after national standing armies became the norm in the eighteenth century, the market for hired guns never vanished. In fact, the modern era has seen a surge of private military contractors, especially after the 2003 Iraq invasion. In late 2017, former Navy SEAL Erik Prince – founder of Blackwater – penned an editorial urging that the Afghan war could be won by swapping out thousands of U.S. troops for contractors^[1]. The proposal never gained official traction, but it underscored how mercenary forces remain a hot topic in contemporary strategy.

10 Fascinating Stories of Legendary Mercenaries Past

1 5 Commando

When the Congo broke away from Belgian rule in 1960, the newborn nation spiraled into a chaotic mix of insurgent warfare and ethnic violence. The left‑leaning revolutionary Patrice Lumumba attempted to consolidate power, but the most formidable opposition came from the mineral‑rich State of Katanga. Its leader, Moïse Tshombe, a devout Christian with a pro‑European outlook, attracted the colony’s white minority, who feared the anti‑white pogroms that erupted after a mutiny in Stanleyville in 1960. By 1961, Katanga’s forces were locked in a fierce siege at Jadotville, where Irish UN troops faced stiff resistance from white settlers who had fled to the mineral‑rich enclave.

Three years later, the Simba rebellion—led by a band of young communists—swept through northeastern Congo, seizing roughly half of the country. The national army proved woefully ineffective, prompting Prime Minister Tshombe (who had survived Lumumba’s assassination in 1961) to hire roughly 300 mercenaries under the command of the infamous “Mad Mike” Hoare. Hoare, a veteran of the British Indian Army in World War II, later turned big‑game hunter and mercenary in South Africa.

Inspired by the historic Wild Geese, Hoare assembled 5 Commando, a unit of white mercenaries drawn largely from South African Boers. This force, alongside other mercenary groups, helped crush the Simba uprising by 1965. 5 Commando earned a reputation for meticulous documentation because several journalists—including South African Hans Germani—served with the unit, chronicling its battles against the Simbas.^[11] The saga even leapt onto the silver screen in the 1978 action film The Wild Geese, for which Hoare acted as a technical advisor. Many veterans of Hoare’s outfit later fought in the Rhodesian Bush War and in the myriad conflicts that pitted apartheid South Africa against its neighbors.

2 The Landsknechts

The Landsknechts were the most controversial yet wildly successful mercenary corps of the Early Modern period, hailing almost exclusively from the Germanic states of the Holy Roman Empire. In the sixteenth century they earned a reputation for ferocity, shifting loyalties, and a penchant for pillage. Contemporary accounts even noted that Landsknecht soldiers would sometimes flip sides mid‑battle.

Emperor Maximilian I of the Holy Roman Empire created the Landsknechts as a direct response to the famed Swiss pikemen serving the French. He recruited robust men from Swabia, Alsace, Tyrol, and the Rhineland, granting them the freedom to dress flamboyantly—an exemption from strict clothing regulations that made them instantly recognizable on the field. Their armaments included the halberd (a poleaxe), the massive two‑handed zweihänder sword, and the early long‑gun known as the arquebus.

At the battles of Bicocca (1522) and Marignano (1515), the Landsknechts outmaneuvered the Swiss pikemen, employing tight squares of pikemen supported by halberdiers, firearms, and swords. They also pioneered the “forlorn hope” tactic, where daring swordsmen surged between opposing pikemen to sow chaos. By the time the Protestant Reformation rolled around, many Landsknechts had embraced Lutheranism, though they continued to serve Catholic patrons. Their lifestyle was infamous: they traveled with prostitutes, drank heavily, and were known to commit rape and pillage when pay was delayed. Their motto, coined by famed commander Georg von Frundsberg, summed up their ethos: “Many enemies, much honor.”

3 The Eagle Of Brittany

While John Hawkwood of the English White Company often steals the limelight, another medieval war‑lord—Breton knight Bertrand du Guesclin—earned the monikers “Eagle of Brittany” and “Black Dog of Broceliande.” Born in 1320, du Guesclin first saw action in the 1340s, fighting for the House of Blois against the House of Montfort during the War of Breton Succession. After a defeat at the Battle of Auray, he was captured by Anglo‑Breton forces and ransomed for an eye‑watering 100,000 francs.

Following his release, du Guesclin briefly left France to serve as a mercenary in Spain under Count Henry of Trastamara, the future King Henry II of Castile and León. He distinguished himself in the Castilian Civil War, where his “free company” helped secure victory at the Battle of Montiel in 1369. A year later, French King Charles V recalled du Guesclin to fight the English. In 1370, he was appointed Constable of France—the kingdom’s highest military office.

Du Guesclin’s tactics favored the Fabian strategy: avoiding large set‑piece battles in favor of swift, harassing skirmishes. Under his leadership, French troops and mercenary bands repeatedly outmaneuvered English forces, cementing his reputation as one of medieval Europe’s most cunning commanders.

4 The White Legion

Africa has long been a hotbed for mercenary activity, especially since the late nineteenth century. One of the more notorious units was the White Legion, which fought for Mobutu Sese Seko during the First Congo War. Roughly 200 Eastern European soldiers—mostly veterans of the former Yugoslav wars—formed the core of this private force.

The White Legion’s primary mission was to guard the strategic city of Kisangani. By 1997, it became evident that Mobutu’s regime was on the brink of collapse, and the Legion withdrew after a series of minor engagements. Though the unit played no decisive role in the war’s outcome, its presence highlighted the globalization of the mercenary trade. Many of its members had previously served under Bosnian Serb commander Ratko Mladic, infamously dubbed the “Butcher of Bosnia” for his wartime atrocities. In 2017, Mladic received a life sentence for war crimes.^[8]

5 The Black Army

The Black Army was a largely mercenary force that propelled the Kingdom of Hungary from a peripheral realm to a dominant power in Christendom. Its founder, King Matthias Corvinus—dubbed the “Renaissance King” for his vast library, scientific curiosity, and shrewd statecraft—recognised the need for a professional fighting force to counter the expanding Ottoman threat.

To finance this army, Matthias imposed taxes on the Hungarian nobility, raising a 30,000‑strong mercenary corps drawn from Bohemia, Austria, Poland, Croatia, Serbia, Bavaria, and Switzerland. Until Matthias’s death in 1490, the Black Army reigned supreme in Central Europe, earning a reputation as the premier fighting force in the Balkans and Eastern Europe.

Despite its successes—including several decisive victories—the Black Army eventually declined due to fiscal reforms in the sixteenth century that stripped its funding. Notably, the army was among the first European forces to adopt firearms on a large scale, marking a pivotal shift in military technology.^[7]

6 Swiss Mercenaries

Switzerland today is synonymous with neutrality, yet its soldiers have a storied past as some of Europe’s most feared mercenaries. The first documented Swiss mercenary companies appear in the thirteenth century, but their fame truly blossomed in the sixteenth century.

Swiss troops fought for King Louis XII of France during the Italian Wars and, from 1516 to 1793, served almost exclusively under the French crown through an unofficial agreement. Their elite units were the pikemen, who formed tight phalanxes wielding 6‑meter (20‑foot) spears. In 1386, a force of 1,200 Swiss pikemen routed a 6,000‑strong Holy Roman army invading Swiss lands. Later, at the 1444 Battle of St. Jakob an der Birs, the French under King Louis XI were repulsed by 1,200‑1,600 Swiss pikemen despite being outnumbered 15‑to‑1.^[6]

Recognising their battlefield prowess, both France and Austria employed Swiss pikemen to great effect. They assisted Spanish and Holy Roman forces in capturing Milan in 1525. The Swiss reputation also earned them a place in the Vatican’s elite guard: the Swiss Guard, formally established in 1506, still protects the Pope today.

7 The Mercenary Revolt In Brazil

Mercenaries are notorious for fighting solely for pay, a trait that can lead to unruly conduct. This was starkly illustrated in 1828 when Irish and German mercenaries rose up against the Empire of Brazil—the very state that had hired them.

The unrest stemmed from the Cisalpine War between Brazil and the United Provinces. By July 1828, Brazil’s war fatigue peaked after a series of defeats. Frustrated that their contractual terms remained unmet, two battalions of Irish and German mercenaries seized control of a sizable portion of Rio de Janeiro.

Violent suppression followed: a coalition of 300 Brazilian troops, 300 French sailors, and 224 British Royal Marines crushed the rebellion, killing roughly 150 mercenaries. Surviving Irish soldiers were repatriated, while many Germans were dispatched to remote Brazilian provinces.

8 American Mercenaries In China

American adventurers have long been woven into China’s tapestry. Throughout the nineteenth century, missionaries, physicians, and teachers populated coastal hubs such as Shanghai, Tianjin, and Qingdao. Parallel to these civilian endeavors, a cadre of American mercenaries found employment with either the Qing Dynasty or the warlords who rose after the 1911–1912 Xinhai Revolution.

Among the most notable were Homer Lea and Philo McGiffin. Lea, a Colorado native, became fascinated with Chinese affairs after befriending Ng Poon Chew in Los Angeles’s Chinatown. He learned Cantonese, joined a secret society, and began training Chinese recruits while still based in California. In 1899, he enlisted with a force loyal to warlord K’ang Yu‑wei and remained in China until Empress Dowager Tz’u Hsi initiated reforms. Lea later befriended Sun Yat‑sen in Hong Kong, and his 1909 treatise, The Valor of Ignorance, predicted a Japanese assault on the Philippines and Hawaii.

McGiffin, hailing from Pennsylvania, failed to graduate from the U.S. Naval Academy due to poor exam scores. Undeterred, he sailed to Tianjin during the Tonkin War (1884‑1885) and volunteered for the Imperial Chinese Navy. After a stint as an instructor at the Chinese Naval Academy, he served aboard the battleship Chen Yuen during the 1894 Battle of the Yalu River. Though the Japanese fleet decimated its Chinese opponent, McGiffin’s vessel fought on for hours before finally succumbing.^[4] The most celebrated American mercenaries in China were the “Flying Tigers,” a volunteer group that served under the Chinese Air Force between 1941 and 1942.

9 The Wild Geese

The Wild Geese, active in the seventeenth and eighteenth centuries, can be seen as the direct descendants of the ancient Celtic mercenaries who once roamed the Mediterranean. After the 1691 Treaty of Limerick—concluding the Williamite‑Jacobite War—Irish Jacobite General Patrick Sarsfield negotiated the departure of as many as 20,000 Irish Catholic troops onto French vessels, where they entered mercenary service across Europe.

These battle‑hardened soldiers quickly earned a reputation as elite light infantry, regarded as the finest on the continent. Irish mercenaries had already been serving Habsburg Spain since the 1580s, when the English crown shipped rebellious Catholics to fight for the Spanish, simultaneously quelling Irish unrest. Many of these Irish soldiers pledged allegiance to Spain, battling English and Dutch forces, later fighting against Napoleon and taking part in Mexico and South America during the height of the Spanish Empire.^[3]

The Wild Geese cemented their martial prestige in France, serving in the Irish Brigade during the War of Spanish Succession, the War of Austrian Succession, and the Seven Years’ War. They also fought alongside Spanish‑French forces against the British during the 1781 siege of Pensacola, Florida.

10 The Celtic Mercenaries Of Egypt

Ancient chronicles make it clear that certain tribes have always been deemed war‑like. While the Western Roman Empire and later periods saw Germanic and Swiss warriors dominate the mercenary scene, the earliest sought‑after fighters were the Celtic peoples of Gaul, northern Italy, the Balkans, and the British Isles.

From the fourth century BC onward, Celtic tribes began raiding Mediterranean city‑states. In 390 BC, Celtic forces sacked an Etruscan settlement on the Tiber River, igniting a protracted feud with the Italian peninsula. This conflict climaxed on July 18, 387 BC, when a Gallic army led by Brennus crushed a Roman legion and plundered Rome, absconding with slaves, women, and treasure.

News of these fierce red‑ and blond‑haired warriors spread rapidly. Greek city‑states such as Syracuse and Sparta frequently hired Celtic mercenaries, and even the Carthaginian commander Hannibal incorporated Celts into his ranks during the Second Punic War.

Celtic mercenaries also fought far beyond Europe. Under the Greek‑origin Ptolemaic dynasty in Egypt, they were regularly recruited into the official army. Many hailed from Eastern European tribes and Galatia in central Anatolia (modern‑day Turkey). During Pharaoh Ptolemy III Euergetes’s reign, Celtic mercenaries played a pivotal role in conquering Syria and Judea, defeating the Seleucid Empire’s forces. Historian Polybius recorded that numerous Celtic soldiers settled in Egypt, marrying Greek or Egyptian women; their mixed‑heritage offspring were referred to by the Greeks as e pigovoi.