One of the earliest formal schools of kyūjutsu, teaching a scientific approach to shooting the bow, was the Ogasawara-ryū, founded in the 14th century. In particular, the practice of shooting a bow while riding a horse at full gallop (yabusame) was developed and trained extensively.
The bow (yumi) itself was fairly unusual in its asymmetrical shape and extremely large size; a little under six feet to just over seven feet long and gripped only one third up from the bottom. At the height of their use, bows were made from a combination of wood and bamboo, and many different arrowheads were created for different applications. Training involved the shooting of 1000 arrows per day, and the techniques developed for their use were ritualized with systematic focus on the various stages of shooting and the mental attitude required for each. Additionally, many specialized tactics were developed for regiments of bowmen.
Once firearms were introduced to Japan in the mid-16th century, emphasis upon the skill of kyūjutsu gradually began to decline. Kyūjutsu was eventually developed into the modern , still practiced today.