Garrisons get extra food and you can also establish guard parties that defend your holdings and destroy nearby bandit hideouts. Troops from nearby villages are automatically recruited to garrisons and prisoners also join them over time. Garrison management can be a bit of a hassle when you're also dealing with countless other things and Bannerlord's Improved Garrisons mod aims to lend you a helping hand. Mount and Blade II Bannerlord Support for the Vortex Mod Manager
Should you bump into some yourself, let us know in the comments. We'll be on the lookout for any new and interesting mods and add them to our list.
Over time, though, we expect the list of the best Mount & Blade 2: Bannerlord mods to grow, adding the likes of new lands, units, magic, and even total conversions.