The Third Amendment says the government can’t force people to “quarter” or house soldiers in their home during peacetime without consent.
Full stop.
The Founders were reacting to British troops being quartered in civilian spaces—homes, inns, taverns—and, for maximum audacity, colonists were required to provide them with things like rum and water. Nothing says empire like forced hospitality.
Imagine having to quarter some British bellend in your house and also they’re drinking all your ale.