Related Rule
Ecuador
Practice Relating to Rule 8. Definition of Military Objectives
Section I. Presence of civilians within or near military objectives
Ecuador’s Naval Manual (1989) states:
Deliberate use of noncombatants to shield military objectives from enemy attack is prohibited. The presence of non-combatants within or near military objectives does not preclude an attack on such objectives … Unlike military personnel (other than those in a specially protected status such as medical personnel and the sick and wounded) who are always subject to attack, whether on duty or in a leave capacity, civilians are immune from attack unless they are engaged in direct support of the enemy’s armed forces or provide them with logistical support. Civilians who provide command, administrative or logistical support to military operations are exposed to attacks while performing such duties. Similarly, civilian employees of navy shipyards, the merchant navy personnel working on ships carrying military cargo, and the workers on military fortifications can be attacked while they carry out such activities. 
Ecuador, Aspectos Importantes del Derecho Internacional Marítimo que Deben Tener Presente los Comandantes de los Buques, Academia de Guerra Naval, 1989, §§ 11.2 and 11.3.