I want to know the answer to the following question:
Which institutions also hired private guards for protection?
All the background I'm provided with is that "Shōen holders had access to manpower and, as they obtained improved military technology (such as new training methods, more powerful bows, armor, horses, and superior swords) and faced worsening local conditions in the ninth century, military service became part of shōen life.". Is that enough to answer the question?
Answer: no