text: Unified Land Operations
  3-49. The term DC is unique to the DOD and not used by the DOS and NGOs. These organizations use the
  term internally displaced persons for civilians displaced within their country and the term refugees for people
  who flee their country of origin and cross an international border. The following distinctions exist among the
  various categories of DCs:
  * According to JP 3-29, displaced persons is a broad term used to refer to internally and externally
  displaced persons collectively. In addition—
  Returnees are displaced persons who have returned voluntarily to their former place of
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  residence.
  Resettled persons are a subset of displaced persons. These are civilians who have been able
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  to resettle in a third country, usually with the assistance of United Nations High
  Commissioner for Refugees and the government of their new country of residence, rather than
  returning to their previous home or land within the country or area of original displacement.
  Resettled persons are usually a very small subset of the original displaced population as
  opportunities for third country resettlement are rare.
  * Evacuees are civilians who are removed from their places of residence by military direction for
  reasons of personal security or the requirements of the military situation.
  Note: The term evacuee is unique to the DOD and not used by the DOS (except for noncombatant
  evacuation operations), NGOs, or international organizations.
  * Internally displaced persons are any persons who have been forced or obliged to flee or to leave
  their home or place of habitual residence, in particular as a result of, or in order to avoid the effects
  of armed conflict, situations of generalized violence, violations of human rights or natural or
  human-made disasters, and who have not crossed an internationally recognized state border.
  * Migrants are persons who belong to a normally migratory culture who may cross national
  boundaries or have fled their native country for economic reasons rather than fear of political or
  ethnic persecution. Migrants travel to escape economic stagnation and poverty. This is in contrast
  to refugees, who travel to escape persecution, conflict, and perhaps death.
  * Refugees are any persons who, owing to a well-founded fear of being persecuted for reasons of
  race, religion, nationality, membership of a particular social group or political opinion, are outside
  the country of their nationality and are unable or, owing to such fear, are unwilling to avail
  themselves of the protection of that country.
  * Stateless persons are civilians who either have been denationalized, whose country of origin
  cannot be determined, or who cannot establish their right to the nationality claimed.
  3-50. While the following are not categories of DCs, they are categories of civilians with whom military
  members may come into contact in an operational area and should be part of this discussion for FHA:
  * Trafficking Victims. Simply stated, trafficking in persons is modern-day slavery, involving
  victims who are forced, defrauded, or coerced into labor or sexual exploitation, such as
  recruitment, harboring, transportation, provision of, or obtaining of a person for the purpose of a
  commercial sex act, in which any of these apply:
  A commercial sex act is induced by force, fraud, or coercion.
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  The person induced to perform such an act has not attained 18 years of age.
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  The recruitment, harboring, transportation, provision of, or obtaining of a person for labor or
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  services through the use of force, fraud, or coercion is for the purpose of subjection to
  involuntary servitude, peonage, debt bondage, or slavery.
  * Vulnerable Persons. Vulnerable persons are persons who may not have equal access to
  humanitarian assistance because of physical, cultural, or social barriers (examples include,
  women, children, the elderly, the disabled, ethnic minorities, and people living with an incurable
  virus or disease). While this is not a legal distinction, it is important to describe this population,
  as it is the most vulnerable who often have the greatest needs.
  Note: JP 3-29 provides additional information on DCs.