A system, which routinely trains the book on strategy(武經) and appoints and extracts(黜陟) depending on its score, was finally held with entering Joseon. Even in Goryeo was carried out the education on military science(兵學) in the national dimension, and was executed thoroughly a military measure based on a book on strategy. However, it was not operated a system that allows a book on tactics to be compulsorily read targeting the military nobility, and appoints and extracts depending on its score. Entering the Joseon dynasty, separately from a selection examination like the military examinations(武科) or a military training test(都試), it was formally introduced a system that routinely trains the book on strategy(武經) at ordinary times and then reflects its score in evaluation of merits. That was closely associated with the propulsion of policy that tries to bring up the military nobility appropriate for a new system while changing a method of organizing and commanding an army. In an early stage, it was administered duties such as training military arts and educating a book on strategy by newly installing in the Hullyeongwan(Military Training Command, 訓練觀). And, it was sent to the Ministry of War(兵曹) to be appointed by performing educating a book on strategy and training military arts and then by choosing an excellent person. Like this, the military service examination, educating a book on strategy and training military arts were integrated and operated as one course, not with being separated respectively and being carried out. By the way, the policy was largely changed while a faction of King Taejong came into power. The book on strategy(武經) was tested while carrying out the military service examination. However, it was not directly associated with educating a book on strategy in the Hullyeongwan. Instead, the book on strategy(武經) was educated targeting all the military officers. In the wake of this, Mugyeong-Gangseup-Je(武經講習制) was held, which is operated separately from an examination of exposition of ancient writings in the military service examination, and since then, was positioned as a basic frame in operation. Mugyeong-Seupdokgwan-Je(武經習讀官制) was installed in a bid to raise an effect on educating the book on strategy(武經) during King Sejong. And, an interest was heightened by arranging several kinds of preferential measures. Due to this, the education was routinely carried out, thereby having been solidified further the operation of a system that appoints and extracts depending on its score. Meanwhile, diverse books on strategy were published while passing through the period of King Munjong and King Sejo, in which the drastic modification work was resolutely carried out over the whole of a military system, and additionally, educating the book on strategy(武經) in several branches was attained. Due to it, the government, which was concerned about occurrence of confusion, again consolidated a training system. Finally, together with compilation of GyeongGukDaeJeon(National Code, 經國大典), tile work, which systematizes a training system, was driven in earnest during King Seongjong. At this time, rather than making a new thing, the existing tiling was reinforced centering on Seupdokgwan-Je(習讀官制), and it came to be faced with enthusiasm for training up to Soldiers(諸色軍士) as well as tile military nobility. In the wake of this, the military nobility class(武班層), which has a full knowledge of the book on strategy(武經), came to be slowly formed.