[Keflavik76]

11.3.1 End of Occupation. Belligerent occupation ceases when the conditions for its
application are no longer met. In particular, as discussed below, the status of belligerent
occupation ceases when the invader no longer factually governs the occupied territory or when a hostile relationship no longer exists between the State of the occupied territory and the Occupying Power.

Belligerent occupation ends when the Occupying Power no longer has effectively placed the occupied territory under its control.

11.3.2 Duration of GC Obligations in the Case of Occupied Territory. In the home territory of parties to the conflict, the application of the GC shall cease on the general close of military operations.

In the case of occupied territory, the application of the GC shall cease one year after the general close of military operations; however, the Occupying Power shall be bound, for the duration of the occupation, to the extent that such State exercises the functions of government in such territory, by the provisions of the following Articles of the GC

Geneva Convention - GC

[Cletus.D.Yokel]

:: the occupied territory ::

Might explain the “fence”, the blast barriers and the enclosure I call the “Federal Military Zone of Washington DC.