Redcoats were put in private homes to punish the people of Boston under the Intolerable Acts of 1774. Today, in any other country on the planet, a commander can seize private property during combat. Only in the United States, even in wartime, appropriation of needed military housing is supposed to be authorized by Congress. Tell that to Aleutians who were forced out of their homes during World War II.

During invasion or civil war, the potential for military forces to become uncontrolled by the constitution is not just possible, but probable. So look for any peacetime behavior by executive branch armed commanders (at any level, to include local police) which suggest they believe the Third Amendment is meaningless. This is dangerous.
For example, research recent attempts by police to seize homes to gain a “tactical advantage” over neighbor standoffs. SWAT officers, without warrant or permission, have battered down doors and arrested homeowners who refuse. Unless courts to start finding militarized police occupation equivalent to soldier quartering under the Third Amendment, the vicious power being unleashed will result in a chain of abuses and ultimately tragedy.