Furthermore, after the shoen koryo sei (the system of public lands and private estates) was established in the 11th century, many armed conflicts arose between the owners of shoen (private estates) and the administrators of koryo (public land, also known as kokugaryo, meaning territory governed by a provincial government office), both of whom now had equal rights; accordingly, Soji (local government officials under the ritsuryo system), Gunji (local magistrates), Goji (local government officials under the ritsuryo system), and Hoji (officers who managed koryo), all of whom were regional administrators of koryo, and Shokan (officers who managed shoen) were all appointed from samurai families.
さらに11世紀に荘園公領制が成立すると、対等な権利主体となった荘園と公領（国衙領）の間に武力紛争が多発し、荘園の現地管理者である荘官、公領の現地管理者である惣司、郡司、郷司、保司には武芸の家の者たる武士が任命されるようになった。