Equips the Minutemen with Army Fatigues, Combat Armour, Automatic Handmade Rifles (And the Sniper Variant), Miniguns, Gauss Rifles and Missile Launchers
For my lore when my Sole Survivor took over the Minutemen he wanted to equip them some of the best weapons so in my playthrough he raided military bases to get this equipment for the Minutemen instead of them using pipe weapons with leather armor.
Works on Minutemen with Flareguns and those that spawn at The Castle with the Old Guns quest. Would suggest waiting 72 hours for the inventory to refresh