Related Rule
Practice Relating to Rule 55. Access for Humanitarian Relief to Civilians in Need
Section A. Access for humanitarian relief
Spain’s LOAC Manual (2007) states under the heading “Passage of relief convoys to areas with civilians”:
The free passage of consignments of medical equipment and supplies is subject to the following conditions:
- they are for the exclusive use of the civilian population;
- their distribution can be effectively controlled;
- they do not give the enemy a military advantage. 
Spain, Orientaciones. El Derecho de los Conflictos Armados, Tomo 1, Publicación OR7–004, (Edición Segunda), Mando de Adiestramiento y Doctrina, Dirección de Doctrina, Orgánica y Materiales, 2 November 2007, § 9.4.b.