Camps administered by the Justice Department for the detention of enemy aliens (not US citizens) deemed dangerous during World War II. Most of the several thousand people in these camps were Issei and Kibei who had been rounded up after the attack on Pearl Harbor because they were perceived as “dangerous.” “Internment camps” is often used interchangeably with “incarceration camps” or “incarceration centers.” However, such use is inaccurate, because the term “internment” refers specifically to the confinement of enemy aliens during wartime, and in the situation of the Japanese in America during World War II, two-thirds of those imprisoned were US citizens and not aliens.