The Musketeers of the Guard were a junior unit of roughly company strength of the military branch of the Royal Household or Maison du Roi. They were created in 1622 when Louis XIII furnished a company of light cavalry (the "carabiniers", created by Louis' father Henri IV) with muskets. Musketeers fought in battle both on foot (infantry) and on horseback (dragoons). As a junior unit in the Royal Guard, the Musketeers were not closely linked to the royal family. Traditional bodyguard duties were in fact performed by the Garde du Corps and the Gardes suisses. Because of its junior status, the Musketeers were open to the lower classes of French nobility or younger sons from noble families whose oldest son served in the more prestigious units. The Musketeers soon gained a reputation for boisterousness and fighting spirit as the only way for social and career advancement was excelling at their task as mounted light dragoons.
Their high esprit de corps and can-do attitude gained them royal favour and they became a popular fixture at court and in Paris. Shortly after their creation, Cardinal Richelieu created a bodyguard unit for himself. So as not to offend the King with a perceived sense of self-importance, Richelieu did not name them Garde du Corps like the King's personal guards but rather Musketeers after the Kings' junior guard cavalry. This was the start of a bitter rivalry between both corps of Musketeers. At the cardinal's death in 1642, the company passed to his successor Cardinal Mazarin. At Mazarin's death in 1661, the cardinal's Musketeers passed to Louis XIV to the disgust of both the King's Musketeers and the Cardinal's Musketeers. The Musketeers were subsequently reorganized as a guard cavalry regiment of two companies. The King's Musketeers became the first company, popularly known as "Grey Musketeers" (mousquetaires gris) from the color of their horses while the Cardinal's Musketeers became the second company, known as "Black Musketeers" (mousquetaires noirs) because they rode black horses.
The Musketeers were the among the most popular of the military companies of the Ancien Régime. This popularity was due to the lower entrance requirements. The senior guard units were in effect closed to all but the most senior and wealthy of French nobles so for the vast majority of French nobles (many of whom lived in genteel poverty), service in the Musketeers was the only way to join a cavalry unit in the Royal Household and perhaps catch the King's eye.
In 1776, the Musketeers were eliminated by Louis XVI, for budgetary reasons. Reformed in 1789, they were eliminated shortly afterward. They were reformed on July 6, 1814, and definitively eliminated on January 1, 1816.
Decades later, starting in 1844, this group was the subject of the now-famous serial publication The Three Musketeers, in the magazine Le Siècle between March and July 1844. The author, Alexandre Dumas, père, based his work on the book Mémoires de Monsieur d'Artagnan, capitaine lieutenant de la première compagnie des Mousquetaires du Roi (Memoirs of Mister d'Artagnan, Lieutenant Captain of the first company of the King's Musketeers) by Gatien de Courtilz de Sandras (Cologne, 1700).
The iconic "Redcoat" of the British Empire was the staple unit in the British armies that carved out the widest spanning Empire the world has seen. Originally worn only by British soldiers, it was adopted by the East India Trading Company and given to sepoys in India. The facing of the jacket was a variety of colours, depending on the regiment. The redcoat was equipped with the 0.75 calibre Land Pattern Musket, or Brown Bess. He was the most thoroughly trained musketeer in history, the British army being the only one in the colonial era to train with live ammunition. A fully trained redcoat could fire four times a minute, compared to the French conscripts average rate of twice a minute. This, combined with the British technique of firing by companies (a method wherein blocks of men fired smaller volleys in succession, creating a wave of fire down the front of the regiment) made it possible for the British to win pitched battles against far superior numbers.
In the Spanish army, the Tercio (sometimes referred to by other nations as a Spanish Square) was a mixed infantry formation of about 3,000 pikemen and musketeers. It was nigh on invincible for its era, capitalizing on the brute strength and close-range abilities of the pikemen and the long-range projectile capabilities of the muskets. In practice, it appeared as a loosely formed phalanx in function, but was far more flexible and deadly. Their reputation was firmly established as a viable fighting force during the Battle of Pavia, where Spanish forces were successful in capturing the French king.
Thanks to the reforms of Gustav II Adolf of Sweden, the Swedish Army in the mid-Seventeenth Century had the finest musketeers in Europe. Gustav's training manual revolutionized musketry and transformed the European battlefield.
Streltsy (Стрельцы) were the units of Russian guardsmen (sl. strelets, стрелец. literally "shooter"; often translated as "musketeer," but more properly "harquebusier") in the 16th - early 18th centuries, armed with firearms (riflemen). They are also collectively known as Strelets Troops (Стрелецкое Войско).
The first strel'tsy units were created by Ivan the Terrible sometime between 1545 and 1550 and armed with the arquebus. They first saw combat at the Siege of Kazan' in 1552. military service in this unit became lifelong and hereditary.
The Muscovite government was chronically short of cash so that the strel'tsy were often not paid well. While "entitled" to something like four rubles a year in the 1550s, they were often allowed to farm or trade in order to supplement their incomes.
In the late 17th century, Streltsy of Moscow began to actively participate in a struggle for power between different government groups, supporting the dissidents and showing hostility towards any foreign innovations.
In spite of these measures, the strel'tsy revolted yet again while Peter was on his Great Embassy in Europe. The corps was technically abolished in 1689; however, after having suffered a defeat at Narva in 1700, the government stopped their disbandment.
Gradually, Streltsy were incorporated into the regular army. At the same time, they started to disband the Municipal Streltsy. Liquidation of the streltsy units was finally finished only in the 1720s, however, the Municipal Strel'tsy were kept in some cities until the late 18th century.
In Zhao Shizhen's book of 1598 AD, the Shenqipu, there were illustrations of Ottoman Turkish riflemen with detailed illustrations of their muskets, alongside European musketeers with detailed illustrations of their muskets. There was also illustration and description of how the Chinese had adopted the Ottoman kneeling position in firing while favoring European-made rifles.
Musket warfare became an integral part of Indian warfare when they were introduced to India in 1519. They were an important defense against the tank-like War Elephants. Both the Mughals and their sworn enemies (such as the Marathas) used musketeers in cover formations while sending volleys of musket fire on unsuspecting soldiers, horses, and elephants.