volunteered to serve as nurses for the ANC (Army Nurse Corps). Satoshi Ito, an incarceration camp inmate, reinforces the idea of the immigrants' children striving to demonstrate their patriotism to the United States. He notes that his mother would tell him, "'you're here in the United States, you need to do well in school, you need to prepare yourself to get a good job when you get out into the larger society'". He said she would tell him, "'don't be a dumb farmer like me, like us'" to encourage Ito to successfully assimilate into American society. As a result, he worked exceptionally hard to excel in school and later became a professor at the College of William & Mary. His story, along with the countless Japanese Americans willing to risk their lives in war, demonstrate the lengths many in their community went to prove their American patriotism. Other concentration camps As early as September 1931, after the Japanese invasion of Manchuria, US officials began to compile lists of individuals, lists which were particularly focused on the Issei. This data was eventually included in the Custodial Detention index (CDI). Agents in the Department of Justice's Special Defense Unit classified the subjects into three groups: A, B, and C, with A being the "most dangerous", and C being "possibly dangerous". After the attack on Pearl Harbor, Roosevelt authorized his attorney general to put a plan for the arrest of thousands of individuals whose names were on the potential enemy alien lists into motion, most of these individuals were Japanese-American community leaders. Armed with a blanket arrest warrant, the FBI seized these men on the eve of December 8, 1941. These men were held in municipal jails and prisons until they were moved to Department of Justice detention camps, these camps were separate from the camps which were operated by the Wartime Relocation Authority (WRA). These camps were operated under far more stringent conditions and they were also patrolled by heightened criminal-style guards, despite the absence of criminal proceedings. Memoirs about the camps include those by Keiho Soga and Toru Matsumoto. Crystal City, Texas, was one such camp where Japanese Americans, German Americans, Italian Americans, were interned along with a large number of Axis-descended nationals who were seized from several Latin-American countries by the U.S. The Canadian government also confined its citizens with Japanese ancestry during World War II (see Internment of Japanese