The Custodian of Enemy Property is an institution that handles property claims created by war. In wartime, civilian property may be left behind or taken by the occupying state. In ancient times, such property was considered war loot, and the legal right of the winner. In the Fourth Geneva Convention Article 147, such action is defined as war crime: "Grave breaches to which the preceding Article relates shall be those involving any of the following acts, if committed against persons or property protected by the present Convention: willful killing, torture or inhuman treatment, including biological experiments, willfully causing great suffering or serious injury to body or health, unlawful deportation or transfer or unlawful confinement of a protected person, compelling a protected person to