What does the international abbreviation "CID" mean in Chinese?

Gendarmerie Crime Investigation Division.

When the United States used military forces abroad several times in the 20th century, the number of military crimes increased because of the substantial increase in the number of troops. Traditional military gendarmerie personnel do not have enough training and experience to deal with related criminal investigations. During World War I, the US military began to set up a specially trained CID (Military Police Criminal Investigation Team) in the military and police forces to investigate the related criminal acts of the US military personnel involved. However, due to the lack of an integrated command mechanism at the beginning, the resources of the gendarmerie criminal investigation teams are not circulating with each other, and their professional skills are different, which leads to poor investigation efficiency. Therefore, 1969 established the US Army Criminal Investigation Bureau under the Chief of Staff of the Gendarmerie to guide all criminal investigation teams of the Gendarmerie in a unified way. However, at this time, there is still no complete order; Finally, in 197 1 year, Melvin Laird, then US Secretary of Defense, instructed the War Department to set up an independent "US Army Criminal Investigation Command (USACIDC)", which integrated all the resources and command of the US military criminal investigation and relieved the troubles of the gendarmerie criminal investigation team for many years. The gendarmerie criminal investigation teams have all been transferred to the command of the Army Criminal Investigation Command, and are no longer under the command of the gendarmerie units at all levels of the Army. However, it is closely related to the gendarmerie in personnel, training, army designation and task execution.