Revolt army in vassal province, vassal is passive?

[unmerged(78308)]

Example. My vassal in sweden has 2 provinces. One of them gets a small revolt army that lays siege to the province. In the other province my vassal has already called his army, but he just stands around and never actually move into the other province. Instead another of my vassals who is located in southern Germany sends his army all the way to Sweden to slay the revolt army in my swedish vassal's province. The two vassals are not allies.

This is just one example of many. Most often they don't do anything about revolt armies. Sometimes they have a huge army but do nothing about the 300 men sieging a province thus in the end loosing that province.

This is very very annoying! Is it a bug? It has happened in all my games.

 

[Veldmaarschalk]

Example. My vassal in sweden has 2 provinces. One of them gets a small revolt army that lays siege to the province. In the other province my vassal has already called his army, but he just stands around and never actually move into the other province. Instead another of my vassals who is located in southern Germany sends his army all the way to Sweden to slay the revolt army in my swedish vassal's province. The two vassals are not allies.

This is just one example of many. Most often they don't do anything about revolt armies. Sometimes they have a huge army but do nothing about the 300 men sieging a province thus in the end loosing that province.

This is very very annoying! Is it a bug? It has happened in all my games.

It is something that doesn't work as it should, so yes it is a bug. Not much can be done about it.

 

[unmerged(78308)]

Ok thanks. At least I now know why.

 

[Kaleidoscope]

Saving and reloading may spur your vassal into action. I often find vast AI armies mobilised and standing around until I do this, at which point they spring into action.
Worth a try.

 

[unmerged(133776)]

I've always thought it was a feature purposely put into the game. A way to cut down on AI Rulers with more than 1 demense provinces. You can always directly mobilize that province being sieged by the rebels and deal with them, or (if he's your direct vassal) ask him to mobilize his troops. Once the battle is over, demobilize that army.

As for that other army traveling to put down the revolt, I too see it quite often. It seems to happen when the 'Being A Good Neighbor' Army was mobilized for war, then the war ended but he failed to demobilize his troops for one reason or another. From that point on, he'll pick on rebels and travel all over the world to get to them. As someone else mentioned saving/reloading will also sometimes fix those 'Wandering' armies.