A free mod for Mount & Blade II: Bannerlord, by Alpine Softworks.
This is a new Sound The Alarm mod for Bannerlord Alert System. This mod adds a new banner to your game window whenever a fief under siege or attack is taken, or when a war or peace is declared between two empires. This will help you to know what is happening in the game world and will give you a chance to act and take control of your fief. It will work for all the games in the series. The only thing you need to do is to install this mod and then drag and drop the Sound The Alarm folder into the Modules folder.
Installation
As of version 1.5.1a, the Sound The Alarm mod has been integrated into ModLib for easy change of mod values in-game. You will need to have ModLib installed and loaded before Sound The Alarm.
How to use
At any time, if one of your fiefs are attacked either under siege or being raided, an alert will show up informing you that this is the case and you can respond either by closing the window, or by selecting the “Track” option to track where that fief is located. Likewise, whenever a war is declared or when peace is signed between empires.