From the help file ...

Using bullying and coercion an Orc can force goblins, kobolds, or
lesser orcs or ogres into service. Only one such enslaved creature
will stay with the Orc at a time. The enslaved will look for any
opening to flee from its service, but will aid the Orc in battle
while still under a watchful eye.

Tried to keep this short and cut the starts and the end. I can give more info.

(Red Aura) (Orderly Aura) An oppressive giant is here, defending the walls of Ostalagiah.
(Red Aura) (Chaotic Aura) Grondarg the orc is here.

civilized <985hp 465m 1228mv 17492tnl (17.49%) 4 PM> Grondarg drinks elf blood from a bloody skin.

civilized <985hp 465m 1228mv 17492tnl (17.49%) 4 PM>
Closing in, Grondarg savages your face with his teeth!
Grondarg's savage feeding MANGLES you!
Blood trickles down into your eyes, temporarily blinding you!
Someone hurls itself at you, slamming roughly into your body!
Someone's bash hits you.
You yell 'Help! Someone is bashing me!'
Someone is in perfect health.

civilized <895hp 465m 1228mv 17492tnl (17.49%) 4 PM>
You parry someone's defilement.
You parry someone's pierce.
You dodge someone's defilement.
Someone screams and attacks you!
You parry someone's stab.
Your crush DISMEMBERS someone!
Your punch EVISCERATES someone!
Someone parries your crush.
Someone has a few scratches.

civilized <895hp 465m 1228mv 17492tnl (17.49%) 4 PM>
Someone has arrived.
Someone tears your flesh with a wide, slicing blow from something!
A spray of blood erupts from your wound!
Someone's slice decimates you!
Someone has a few scratches.

civilized <870hp 465m 1228mv 17492tnl (17.49%) 4 PM> pul e

You parry someone's defilement.
You dodge someone's pierce.
Someone parries your crush.
Someone parries your crush.
Someone has a few scratches.

civilized <870hp 465m 1228mv 17492tnl (17.49%) 4 PM>
The gods protect you from someone.
Someone utters the words, 'wzhabaruq djuqtunsouio'.
Someone has a few scratches.

civilized <870hp 465m 1228mv 17492tnl (17.49%) 4 PM> You snake out something around someone and pull it along with you!
You can't see a thing!
Someone has a few scratches.
*** So this right here this I would assume would be no longer under a watchful eye ***

civilized <870hp 465m 1228mv 17492tnl (17.49%) 4 PM>
In the heat of battle, someone explodes into a berserker's rage!
Someone has a few scratches.

civilized <870hp 465m 1228mv 17492tnl (17.49%) 4 PM>

Fighting and winning at 5pm so I would have assumed the mob would have run away as per help file. But no another tick passes and then the mob attacks.

civilized <95hp 426m 1232mv 17492tnl (17.49%) 5 PM>
The rain ceases.
Someone has arrived.
You are thirsty.
You continue to bleed from your wounds.
Your bleeding artery devastates you!
You sure are BLEEDING!
Someone yells 'I feed ya to fires of volcano, Tarak!'
You parry someone's stab.
Someone is in perfect health.

civilized <67hp 429m 1232mv 17492tnl (17.49%) 6 PM>

Your interpretation isn't necessarily how it should work.
Some things make their slaves run off.
Some things don't.

Can you look at the bug that allows their slaves to stay around if they die while the slave is out of the room but allows them to still be enslaved and following the orc when they return.

I had multiple orcs that I fought down to the wire and killed... end up being able to kill me because their slaves would begin following them when they returned as a ghost and they'd lead them into me over and over to finish me off. This is especially bad with that one slave with the iron polearm who can cut you off.

Someone else already reported this somewhere in there.

I have mixed feelings about how it should work, but it's not a quick-fix so I'm avoiding it for now.