Mercenaries in the eight Italian Wars I

In 1515, the Franco-Venetian alliance decisively defeated the Holy League at the Battle of Marignano.

Detail from the above Battle of Marignano, Swiss mercenaries and German Landsknechts fighting for glory, fame, and money at the battle of Marignan (1515). The bulk of the Renaissance armies was composed of mercenaries.

“Mercenaries and auxiliaries are useless and dangerous”

Mercenaries were used very frequently in the eight Italian Wars (1494 to 1559): the core of the French infantry consisted of Swiss mercenaries, while the Italian cities hired both native and German mercenaries. Although many leaders were eager to hire mercenaries, in his famous work The Prince (1532) Niccolò Machiavelli strongly warned them not to do so. As might be expected, however, his advice fell on deaf ears: during the Thirty Years’ War (1618–1648), marauding bands of mercenaries would lay waste to entire regions of Central Europe.

These wars initially arose from dynastic squabbles but soon evolved into a more general and very repetitive struggle for power and territory. They have many different names: the Great Italian Wars, the Great Wars of Italy, the Habsburg-Valois Wars, and the Renaissance Wars. Whatever name is preferred, however, it basically refers to the same thing, namely, the complicated series of conflicts between 1494 and 1559 that involved, at various times, France, the Holy Roman Empire, the city-states of Italy, England, Scotland, Spain, the Ottoman Empire, the Swiss, Saxony, and other players.

Taking place in southern and Western Europe, the wars finally ended in a Habsburg victory, with Spain emerging as the dominant European power. However, they are such a confusing kaleidoscope of military and political factors, ambitious leaders (mercenaries, nobles, and kings), alliances, counter-alliances, and betrayals they are not described here in great detail. Instead, the focus is very selective, only on those parts of some campaigns where mercenaries were used in a significant way.

The Italian War of 1494–1498: The First Italian War pitted Charles VIII of France against the Holy Roman Empire, Spain, and an alliance of Italian powers under the leadership of Pope Alexander VI. In the opening stages of that war, Charles VIII invaded Italy with an army that included 8,000 Swiss mercenaries. At first his forces moved through Italy without much opposition: the condottieri (mercenary) armies of the Italian city-states were much too weak to stop the French forces.

The French reached Naples in February 1495 and captured it without a siege or a pitched battle. The Italian city-states, however, realizing that a foreign monarchy in their midst could endanger their own autonomy, created the League of Venice. This new institution pulled together an army under the leadership of the condottiero (mercenary chieftain) Francesco II Gonzaga. Charles VIII, not wanting to be trapped in Naples, marched north to Lombardy, where he fought the League at the battle of Fornovo (July 1495), using artillery and 3,000 of his own mercenaries. The outcome was both a success and a failure for him: he managed to retreat to France with most of his army intact, but he had to leave behind nearly all the booty he had seized in Italy.

The Italian War of 1499–1504: In 1499, Louis XII of France, having made an alliance with the Republic of Venice and with Swiss mercenaries, invaded the Duchy of Milan. Ludovico Sforza of Milan hired an army of Swiss mercenaries himself. The Swiss mercenaries, however, did not want to fight each other and Ludovico was defeated by Gian Giacomo Trivulzio, a noted Italian mercenary who held several military commands during the Italian Wars. (Trivulzio had abandoned Ludovico and, switching sides, had joined Charles VIII.) Ludovico himself was handed over to the French in 1500 and spent the rest of his life jailed in miserable conditions in an underground dungeon in France.

The War of the League of Cambrai (1508–1516): The War of the League of Cambrai, also known as the War of the Holy League and by other names, too, was a major conflict during the Italian Wars. The chief participants were at varying times: France; the Papal States; the Republic of Venice; Spain; the Holy Roman Empire; England; Scotland; the Duchy of Milan; Florence; the Duchy of Ferrara; and, last but by no means least, the redoubtable Swiss mercenaries. The final victors were the French and Venetians.

Pope Julius II had wanted to curb the territorial ambitions of the Republic of Venice, so in 1508 he formed the League of Cambrai for this purpose. By focusing only on the role of mercenaries, one can note that in 1509 Louis XII of France left Milan at the head of a French army and invaded Venetian territory. To oppose him, Venice hired a mercenary army under two cousins—Bartolomeo d’Alviano and Nicolo di Pitigaliano. Unfortunately, however, they could not agree how to oppose the French.

As a result, when Louis XII crossed the Adda River, Bartolomeo advanced to attack him. Nicolo, on the other hand, saw no virtue in a pitched battle, so he moved away to the south. When Bartolomeo fought the French at the battle of Agnandello, he found that he was outnumbered and he urgently asked his cousin to send him reinforcements. Nicolo, however, simply ordered Bartolomeo to break off the battle and he then continued on his own way. Bartolomeo, disregarding these orders, kept on fighting until his army was surrounded and was destroyed. Nicolo, for his part, managed to steer clear of the victorious French forces but when his mercenary troops heard of Bartolomeo’s defeat, they deserted in large numbers, forcing Nicolo to retreat with the remnants of his army. The Venetian collapse was complete but Nicolo soldiered on.

In 1509 the citizens of Padua, aided by detachments of Venetian cavalry under the command of the “proveditor” Andrea Gritti, revolted. (A proveditor was a civilian official charged with overseeing the actions of the mercenary captains hired by the Republic of Venice.) Padua was guarded by some Landsknechts but they were too few in number to resist the revolt effectively, so Padua reverted to Venetian control. Relief forces were sent toward Padua but Nicolo had enough time to concentrate his remaining troops there. At the siege of Padua, although enemy artillery fire breached the city’s walls, Nicolo and his men were able to stand fast: the city did not fall. When Nicolo died of natural causes in 1510, Andrea Gritti took his place as proveditor.

Pope Julius II was increasingly worried by the growing French military presence in Italy, so he hired an army of Swiss mercenaries to attack the French in Milan and he formed an alliance with the Venetians, who also feared the French invaders.

The Italian War of 1521–1526: Francis I of France had wanted to become Holy Roman Emperor. When Charles V of Spain got the job instead, this gave Francis the pretext to start a general war. The war, fought in Italy, France, and Spain, pitted Francis and the Republic of Venice against the Holy Roman Emperor Charles V, Henry VIII of England, and the Papal States. The result was a Spanish and Imperial (Holy Roman Empire) victory. From what might be called a ”pro-mercenary” point of view (in the sense that many of the advantages of mercenaries, at least as seen by their employers, have been recounted), the most interesting action of this war was the rout of Swiss mercenaries at the battle of Bicocca in 1522.

In this battle, a combined French and Venetian force, led by Odet de Foix, the Vicomte de Lautrec, was decisively defeated, north of Milan, by a Spanish-Imperial and Papal army commanded by Prospero Colonna. Lautrec had wanted to attack Colonna’s lines of communication but his (Lautrec’s) Swiss mercenaries complained that they had not been paid since their arrival in Lombardy. They demanded an immediate battle, threatening to abandon the French and return to their cantons if Lautrec refused to attack. Their demand forced him, against his will, to assault Colonna’s well-fortified position. Lautrec’s Swiss pikemen moved forward over open fields under a fierce artillery bombardment, suffering heavy losses, and had to stop at a sunken road backed up by earthworks. There they encountered the concentrated fire of Spanish arquebusiers and were forced to retreat. Their total losses were more than 3,000 dead.

The net result was that, a few days later, the Swiss mercenaries marched back to their cantons, while Lautrec had to retreat into Venetian territory with the remnants of his army. The significance of this battle is three-fold: it marked the end of Swiss pike-dominance among the infantry units of the Italian Wars; it forced the Swiss to change their policy of attacking with only massed columns of pikemen, i.e., without the support of other troops; and it was one of the first engagements where firearms played a decisive role in the outcome. The Italian historian and statesman Francesco Guicciardini (1483–1540) remarked on how this battle changed the military attitude of the Swiss. He wrote:

They went back to their mountains diminished in numbers, but more diminished in audacity; for it is certain that the losses which they suffered at Bicocca so affected them in coming years that they no longer displayed their wonted vigour.

The really decisive engagement of the Italian War of 1521–1526, however, was the battle of Pavia (1525), in which a Spanish-Imperial army under Charles de Lannoy, working together with a garrison of Pavia under Antonio de Leyva, attacked the French army, which was under the personal command of Francis I of France. The end result was that the French army was soundly defeated: in fact, Francis himself was captured by Spanish troops when his horse was killed from under him by Caesare Herocolani, an Italian mercenary. Francis was then imprisoned by Charles V and was forced to sign the humiliating Treaty of Madrid.

Mercenaries played significant roles in the battle of Pavia but rather than trying to recount their exploits here in exhaustive detail, it is better to look briefly at a few of the highlights. Examples include the following:

  •  A mass of French troops arrived at Pavia in October 1524 to besiege the city. Inside the city were about 9,000 men, mainly mercenaries, whom the Spanish commander Antonio de Leyva was able to pay only by melting down the gold and silver plate of the local churches.
  •  Confusingly, two different mercenary Black Bands were involved at the battle of Pavia. One, headed by Giovanni de’ Medici, consisted of Italian mercenary arquebusiers who had just entered French service. The other, led by François de Lorraine, consisted of renegade Landsknecht pikemen.
  •  Antonio de Leyva overran 3,000 Swiss mercenaries who had been manning the siege lines. Survivors tried to flee across a river but suffered massive causalities as they did so.

After his decisive defeat in the battle of Pavia, Francis wrote these famous lines in a letter to his mother, Louise of Savoy:

To inform you of how my ill-fortune is proceeding, all is lost to me save honour and life, which remain safe….

The War of the League of Cognac (1526–1530): This war was fought between the Habsburg lands of Charles V (e.g., Spain and the Holy Roman Empire) and the League of Cognac (an alliance of France, Pope Clement VII, the Republic of Venice, England, the Duchy of Milan, and the Republic of Florence). The result was a decisive Spanish-Imperial victory.

The most interesting mercenary involved in this war was the Genoese admiral Andrea Doria (1466–1560). Orphaned at an early age, when he grew up he became a soldier of fortune, first serving in the Papal guard and then under different Italian princes. In 1503, when fighting in Corsica in the service of Genoa, which was then ruled by the French, he took part in the revolt of Genoa against the French, and forced the French to evacuate the city. This made his name as a mercenary commander.

His next assignment, as chief of the Genoese fleet, was to wage war against the Turks and the Barbary pirates. While he was doing this, the French recaptured Genoa, which was later seized by the armies of the Holy Roman Emperor. Doria, however, sided with the French and entered the service of King Francis I of France, who promoted him to captain-general. In 1524 he relieved Marseille, which was under attack by the Holy Roman Empire, and later helped the French return to power in Genoa.

Later, Francis sent an army to Genoa, where Doria, still on the French side, seized much of the Genoese fleet. Doria, however, then turned his back on the French and sided with Charles in 1528. Doria’s subsequent offensive against Genoa ended any remaining hopes Francis had of keeping his hold on Italy. Much later, in 1543, Doria transported a relief army to Nice during the siege of that city by the Ottoman leader Hayreddin Barbarossa. After the Peace of Crépy in 1544, however, he wanted to end his days in peace and quiet in Genoa. His great wealth and power, coupled with the arrogance of his family, had made him many enemies there. In 1550, at the age of 84, he went to sea again to face the Barbary pirates, but without much success. He returned to Genoa for good in 1555 and died there five years later.

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