Reinforcements have arrived at the Castle! If you just want them for the Castle then this mod is fine on its own. Their outfits and inventory are entirely random
If you want them to be movable to other settlements then you’ll need my mod ‘Recruit and Move Minutemen’ (make sure you place that mod somewhere above this one in your load order) : mods.bethesda.net
If you want more there’s also a version with 20: mods.bethesda.net