Metsuke (a governmental post of the Edo bakufu) (目付)
Metsuke is
A governmental post of the Edo bakufu.
It was one of the posts that daimyo in the Sengoku period (period of warring states) established for checking the human heads, brought by their subordinates after a battle, for granting appropriate rewards.
one's body part to which their opponent pays their special attention
summary
It is said that this term was originated in the persons who, in the Sengoku period (period of warring states), watched the states of soldiers, their leaders and enemies, and reported them to their lords.
In the Edo bakufu, the officers in this post watched for Wakatoshiyori (governmental officers in the bakufu) the states of Hatamoto (direct retainers of the bakufu) and Gokenin (also direct retainers of the bakufu, but lower-ranked than Hatamoto). This post was established in 1617, and the number of the officers was up to 10. Posts similar to this were established in domains as well.
A post called Kachi-metsuke or Hoko-metsuke was also placed to watch the fighting results and job statues of Gokenin and Ashigaru (common foot soldiers).