Found a quest bug today...

[Silent1]

I failed training mission by completing a gang war mission. Says I lost all borrowed troops, although they are still in my party. I also can not disband the borrowed troops.

 

[Ananda_The_Destroyer]

https://forums.taleworlds.com/index.php?forums/singleplayer.658/
^to report bugs

You can kill them with arrows to the head to get rid of them.

 

[Silent1]

Thanks for the link. If someone could move it I would appreciate it.
Yeah I've been just sending off ahead of the group.