Is Part IV,Article 53 the one that states if a place of worship is used as a military fighting position or weapons storage, it's protected status is no longer valid? Also, does anyone know what section of the Hague Conventions mentions this as well?
Article 53.-Protection of cultural objects and of places of worship Without prejudice to the provisions of the Hague Convention for the Protection of Cultural Property in the Event of Armed Conflict of 14 May 1954, and of other relevant international instruments, it is prohibited: ( a ) To commit any acts of hostility directed against the historic monuments, works of art or places of worship which constitute the cultural or spiritual heritage of peoples; ( b ) To use such objects in support of the military effort; ( c ) To make such objects the object of reprisals.
Art. 27. In sieges and bombardments all necessary steps must be taken to spare, as far as possible, buildings dedicated to religion, art, science, or charitable purposes, historic monuments, hospitals, and places where the sick and wounded are collected, provided they are not being used at the time for military purposes.
As you see "provided they are not used at the time for military purposes" seems to relate to what you're looking for. I don't think I had read through the Hague Convention before so it was interesting to read it. It's rather short and to the point. I suggest other people read through it.