Соответствующая норма
Practice Relating to Rule 114. Return of the Remains and Personal Effects of the Dead
Section A. Return of the remains of the dead
Spain’s LOAC Manual (1996) provides that when bodies have been cremated, the ashes of the deceased shall be forwarded to the Graves Registration Authority and handed over to relatives as soon as practicable. 
Spain, Orientaciones. El Derecho de los Conflictos Armados, Publicación OR7-004, 2 Tomos, aprobado por el Estado Mayor del Ejército, Division de Operaciones, 18 March 1996, Vol. I, Article 5.2.d.(6).
Spain’s LOAC Manual (2007) states:
Efforts must be made to facilitate the return of the bodily remains or ashes of the deceased … to their country of origin.
Ashes must be returned through evacuation channels to the graves registration service. 
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, § 5.2.d.(6); see also § 6.2.b.(3).