Under certain circumstances, persons and objects that are protected under international humanitarian law lose the protection conferred upon them. In such cases, they may become lawful military objectives.
Such a loss of protection can occur when persons protected against attack directly participate in hostilities, or when civilian objects are used for military purposes. In addition, if medical personnel commit or medical objects are used to commit acts harmful to the enemy, outside their humanitarian function, lose their special protection and may even be attacked if they directly participate in hostilities (persons) or turn into military objectives (objects).
for wounded, sick and shipwrecked or persons otherwise hors de combat, parachuting airmen in distress
for act of hostilities
When DPH: See Direct participation in hostilities
for civilian objects
if military contribution
for civil defence objects
for cultural, spiritual objects
for medical objects
for acts harmful to the enemy
other specially protected objects