القاعدة ذات الصلة
Spain
Practice Relating to Rule 108. Mercenaries
Section B. Status of mercenaries
Spain’s LOAC Manual (1996) included mercenaries in the section concerning persons not entitled to protection, stating:
They are neither considered civilians nor have the right to take a direct part in hostilities as combatants. The more important consequence is that to the extent that they take a direct part in hostilities, they shall not be entitled to prisoner-of-war status. 
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, § 1.4.b.
Spain’s LOAC Manual (2007) states that mercenaries “are not entitled to prisoner-of-war status if they are captured”. 
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, § 1.4.