Internment is the imprisonment of people, commonly in large groups, without charges or intent to file charges, and thus no trial. The term is especially used for the confinement "of enemy citizens in wartime or of terrorism suspects". Thus, while it can simply mean imprisonment, it tends to refer to preventive confinement rather than confinement after having been convicted of some crime. Use of these terms is subject to debate and political sensitivities.
Interned persons may be held in prisons or in facilities known as internment camps, also known as concentration camps.
Internment also refers to a neutral country's practice of detaining belligerent armed forces and equipment on its territory during times of war under the Hague Convention of 1907.