Yonin 5

Night Attack

... Four

When criminals break into a temple or a strong warrior residence, the resident warriors will come out [to apprehend the intruders] and they should identify the lunatics.

*In this translated section of the Bansenshukai the author discusses the problems involved in apprehending intruders. That is, identifying the enemy in the dark is not only important but also very difficult. It is interesting to note that the author uses "lunatics" in this context. It is not clear though, whether he refers to all the intruders as lunatics, or to those among them who are especially violent and behave like lunatics. In any case, it is interesting to see the wide range of possibilities and details the author includes in this section.