Соответствующая норма
Spain
Practice Relating to Rule 19. Control during the Execution of Attacks
Spain’s LOAC Manual (1996) states: “If in the course of an attack the objective appears not to be military, the commander shall deviate or cancel the attack.” 
Spain, Orientaciones. El Derecho de los Conflictos Armados, Publicación OR7-004, 2 Tomos, aprobado por el Estado Mayor del Ejército, División de Operaciones, 18 March 1996, Vol. I, § 10.8.e.(2).
The manual further states:
An attack must be suspended or cancelled when, from the information available at the time of the execution of the attack, it may be expected to cause damage to civilian persons and/or objects which would be excessive in relation to the military advantage anticipated from the attack as a whole. 
Spain, Orientaciones. El Derecho de los Conflictos Armados, Publicación OR7-004, 2 Tomos, aprobado por el Estado Mayor del Ejército, División de Operaciones, 18 March 1996, Vol. I, § 2.5.c.
Spain’s LOAC Manual (2007) states: “An attack must be cancelled or suspended if it becomes apparent that the objective or target is not a military one.” 
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, § 5.4.e.(1); see also § 7.3.a.(1).
The manual further states:
An attack must be cancelled or suspended if it becomes apparent, based on information available in the execution phase, that it is likely to lead to casualties among the civilian population or cause damage to civilian property which would be excessive in relation to the military advantage anticipated from the attack considered as a whole. 
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, § 2.5.c; see also §§ 4.3 and 4.5.a.(1).(b).