0031-0330 irl.qxd 2.3.2009 14:20 Page 177 PROTECTION OF CIVILIAN PERSONS 177 protected in the same manner as the hospitals provided for in Article 18, and shall be marked, with the consent of the State, by the display of the distinctive emblem provided for in Article 38 of the Geneva Convention for the Amelioration of the Condition of the Wounded and Sick in Armed Forces in the Field of August 12, 1949. ART. 22. — Aircraft exclusively employed for the removal of wounded and sick civilians, the infirm and maternity cases, or for the transport of medical personnel and equipment, shall not be attacked, but shall be respected while flying at heights, times and on routes specifically agreed upon between all the Parties to the conflict concerned. They may be marked with the distinctive emblem provided for in Article 38 of the Geneva Convention for the Amelioration of the Condition of the Wounded and Sick in Armed Forces in the Field of August 12, 1949. Unless agreed otherwise, flights over enemy or enemy-occupied territory are prohibited. Such aircraft shall obey every summons to land. In the event of a landing thus imposed, the aircraft with its occupants may continue its flight after examination, if any. VII. Air transport ART. 23. — Each High Contracting Party shall allow the free passage of all consignments of medical and hospital stores and objects necessary for religious worship intended only for civilians of another High Contracting Party, even if the latter is its adversary. It shall likewise permit the free passage of all consignments of essential foodstuffs, clothing and tonics intended for children under fifteen, expectant mothers and maternity cases. The obligation of a High Contracting Party to allow the free passage of the consignments indicated in the preceding paragraph is subject to the condition that this Party is satisfied that there are no serious reasons for fearing: Consignments of medical supplies, food and clothing a) that the consignments may be diverted from their destination, b) that the control may not be effective, or c) that a definite advantage may accrue to the military efforts or economy of the enemy through the substitution of the abovementioned consignments for goods which would otherwise be provided or produced by the enemy or through the release of such material, services or facilities as would otherwise be required for the production of such goods. The Power which allows the passage of the consignments indicated in the first paragraph of this Article may make such