system
Given the following post, respond as if you're commenting on Reddit:
human
[King of the Hill] In "Hanks Bad Hair Day" season 4 episode 19 the military got rid of barbers. In season 9 episode 15 there are a group of barbers operating openly. Why would the military re-engage such a silly profession? I found it surprising that Bill could hide his job... How did he do that?
gpt
As is clearly established in the episode, after the Army Barbers Corps is shut down, the base secretes a barbers chair in a games room and reclassifies Bill as a pinball repairman because soldiers had problems with civilian barbers. 

I would imagine that this same situation played out on multiple other bases until the army brass realized that The Army Barbers Corps was necessary and re-established it by s09e15.