Early modern warfare
Japanese battle planning soon centered around manipulating one's enemies into allied fortified positions to rapidly dispatch enemy manpower, only engaging in hand-to-hand combat when necessary.
Similarly, Japanese daimyō were introduced to artillery in 1551, when a trader claiming to be the king of Rome presented elements of the Ōtomo clan with two examples of field artillery. As with their small arms counterparts, many warlords wished to quickly adopt the weapon in order to gain an advantage over their contemporaries, but difficulties in producing suitable reproductions led to limited early usage in comparison. As with personal firearms, Oda Nobunaga was early to adopt the new weapon, and later, after his death, one of his retainers Toyotomi Hideyoshi would use cannons to destructive effect to lay siege to Kanki Castle in 1582. Moreover, Nobunaga had attempted to incorporate cannons onto warships in 1578, but their inefficacy against rival naval daimyō forces under the Mori had led to the discontinuation of any further implementations to other naval forces.
These changes and adoptions into Sengoku era Japanese warfare made themselves present during the Japanese invasions of Korea of 1592–1598 after Toyotomi Hideyoshi had unified Japan. Early success in the first incursion during May 1592 into Korea was attributed to the varied small arms and tactics of the Japanese forces, allowing them to make and defend early footholds into the Korean peninsula. However, after the Koreans had allied themselves with Ming China, they gained access to better artillery with greater range and destructive power than their Japanese equivalents. Finally, the Korean navy under the command of Yi Sun-sin had utilized the superior, cannon-armed navy of the Korean-Ming alliance against the Japanese maritime supply lines, eventually leading to a shortage of supplies and Japanese losses on the mainland. Japan was driven off their last stronghold in Seoul in May 1594, and subsequent ventures 1597 would not come close to the success of the first, as the Korean-Ming alliance had developed countermeasures and equivalent small arms to Japanese equivalents.
The Japanese version of the fire arrow (rocket arrow) was known as the bo hiya. The Japanese pirates (wokou, also known as wako or kaizoku) in the 16th century were reported to have used the bo hiya which had the appearance of a large arrow. A burning element made from incendiary waterproof rope was wrapped around the shaft and when lit the bo hiya was launched from a mortar like weapon hiya taihou or a wide bore Tanegashima matchlock arquebus. During one sea battle it was said the bo hiya were "falling like rain".

Kingdom of Mysore: The first iron rockets were developed by Tipu Sultan, a Muslim ruler of the South Indian Kingdom of Mysore. He successfully used these iron rockets against the larger forces of the British East India Company during the Anglo-Mysore Wars. The Mysore rockets of this period were much more advanced than what the British had seen, chiefly because of the use of iron tubes for holding the propellant; this enabled higher thrust and longer range for the missile (up to 2 km range). After Tipu's eventual defeat in the Fourth Anglo-Mysore War and the capture of the Mysore iron rockets, they were influential in British rocket development and were soon put into use in the Napoleonic Wars.

Mughal Empire: Babur, the founder of the Mughal Empire on the Indian subcontinent, employed firearms, gun carts and movable artillery in battle. In particular, he used them at the first Battle of Panipat (1526) to defeat the much larger forces of Ibrahim Lodhi, the last ruler of the Delhi Sultanate. Other battles he fought using gunpowder weapons include the Battle of Khanwa in 1527 against Rana Sanga, and the Battle of Ghaghra in 1529.
His descendants also employed gunpowder weapons in their expansion of the Mughal Empire, such as Akbar the Great at the second Battle of Panipat (1556) against Adil Shah Suri and Hemu of the Sur dynasty. In 1582, Fathullah Shirazi, a Persian-Indian developed a seventeen-barrelled cannon, fired with a matchlock.

Ottoman Empire: The Ottoman Empire had been one of the first Middle Eastern states to effectively use gunpowder weapons and used them to great effect conquering much of the Middle East, North Africa, and the Balkans. In the 17th century the state began to stagnate as more modern technologies and strategies were not adopted. Specifically, the Ottoman Empire was slow to adopt innovations like boring cannon (rather than casting them in a mold), making the conversion from matchlock firearms to flintlocks, and the lightening of field guns and carriages.
In part this was because the military elite had become a powerful force in the empire and change threatened their positions. David Nicolle theorizes that one contributing factor to the Ottoman reluctance to adopt the flintlock musket, despite its superiority over the matchlock ignition system, was the dusty climate of much of the Middle East which could cause problems with reliability.
Overall, the Ottoman Empire between the 15th and 18th centuries has been assessed as a military producer which copies existing technologies, but does not capture the underlying process of innovation or adaption. Other research, though, complicates that view. A Chinese military manual published in 1644 compared Ottoman and European firearms in the following manner:

Firearms have been in use since the beginning of the dynasty, and field armies in battle formation have found them convenient and useful to carry along... Since muskets have been transmitted to China, these weapons have lost their effectiveness... In battle formation, aside from various cannon such as the "three generals", the breech-loading swivel gun, and the "hundred-league thunder", nothing has more range or power than the Turkish musket. The next best is the European one.
The fact that Ottoman firearms were considered by 17th century Chinese writers to be superior to European firearms demonstrates that the Ottoman Empire was at least a second tier producer of muskets during this period. However, some claim that the 'European' firearms the Chinese researcher tested were actually Japanese arquebuses based on fifty-year-old Portuguese models. The design of the Ottoman matchlock is substantially different from that of the European variety and it in turn influenced the matchlocks produced in both Safavid Persia and Mughal India.

15th century: The Ottoman Empire by the middle of the fifteenth century had developed strategic infantry groups along with the ascension of weaponry. Early modern warfare has many important factors alongside weapons and artillery, and strategy is one of them. Developing a strong core for the sultan was key to understanding the way the Ottoman Empire could expand and take over vast territories to maintain them under their rule. One of the most important creations for their early modern warfare was a group called the Janissaries. They were considered to be an elite group of infantryman that were highly skilled and sociable. With their placement in use for the sultan, they were an unmatched military power that no European power could compete with during the fifteenth century.
The Ottoman Empire was brought up in a different way from most militaristic powers, and that was from the bottom up. They were developed in peaceful upbringings. When they conquered Constantinople in 1453, they had created a transcontinental government that would see them to continue to expand militarily and politically. They used the Janissary units to advance their stronghold on the will of the people they conquered. One of their techniques was to capture boys from the territories they had defeated and forced them to become Muslim in order to control their easily molded minds. It was a similar tactic to many growing empires, because it is understood that children are easily manipulated, and in order to maintain new territories guarded by the Janissary, they needed to have an easier population to mold. The Janissaries also had other roles outside of military conflict. They were one of the main protectors of the sultan in order to prevent coups from happening, or paramilitary units from gaining control of the empire. The problem with this is that the Ottoman Empire made the Janissaries too powerful and because of their socialization, career advancement options, and recruitment procedures, the men in the units were very cohesive and respected each other more than the sultan. This would prove to be an issue later on, but during the fifteenth century it was not an issue yet because their numbers were still growing and would continue to grow in order to boost their elite power.
A man by the name of Konstantin Mihailović was captured by the Turks in 1455 and would eventually write a memoir about his time with the Ottoman Empire's Janissary units. His account would be considered flawed because of the translations from Serbian to Czech and Polish. There is no original text from his memoir and only translations are left to work from, and those have far fetched ideas of what the Janissaries were doing during the time. He was recaptured in 1463 by Hungarian troops and eventually wrote the memoir after he became a Christian again. His memoir is an important piece of history, but scholars and historians have widely debated the authentic nature of his stories and doubt the consistency of his tales.
The Ottoman Empire was one of the first states to put gunpowder weapons into widespread use. The famous Janissary corps of the Ottoman army began using matchlock muskets as early as the 1440s.