Prevent allied armies from attaching to your armies

[Riekopo]

I would like a way to prevent allies from attaching their armies to my armies. Sometimes I want my allies to act independently and not just create a super stack on my armies. I know there is a way to attach my own armies to allied armies, but I don't see any way to prevent the AI from attaching itself to my own armies.

 

[Riekopo]

Please let me fight alone.

 

[Rags17]

Throw them some dog biscuits, walk away and type "STAY !" in the console.