Norma relacionada
Spain
Practice Relating to Rule 100. Fair Trial Guarantees
Section G. Examination of witnesses
Spain’s LOAC Manual (1996) states: “Before imposing a [disciplinary] decision, the accused prisoner … can explain his conduct and defend himself, including by presenting witnesses”. 
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, § 8.2.e.(2).