Chapter IV : Buildings and material - Art. 15.
Art. 15. The buildings and material of the fixed medical establishments of the army shall be subject to the laws of war, but may not be diverted from their purpose so long as they are necessary for the wounded and sick.
Nevertheless, the commanders of troops in the field may make use of them, in case of urgent military necessity, provided that they make previous arrangements for the welfare of the wounded and sick who are being treated therein.