How can I make my Legendary Crossbowdwarf stand down?

Note, I am playing an old succession game using version 40d.

I have a legendary Marksdwarf. I stationed him where he needed to be using x > s. The seige is over, the goblins are routed, but Fikod won't stand down. I can reassign him, but if I go to the milita screen (m), I can't deactivate him using a like I could with all of the other dwarves.

Solution 1:

Legendary military dwarfs cannot be deactivated. This is a game feature, as those dwarfs have adapted to the militia life and are no longer willing to work as mere civilians. If you want to make sure they're not running around murdering things at a whim, you could station them somewhere or have them training other recruits. This is why you should make sure your important craftsdwarfs don't reach legendary level in weapons skills.