Which group was primarily composed of Japanese American volunteers during World War II?

The 442nd Regiment is well-known as a unit that was primarily composed of Japanese American volunteers during World War II. This regiment was formed in 1943, largely consisting of Nisei (second-generation Japanese Americans) who enlisted in the U.S. Army despite the discrimination and internment their families faced during that period. The 442nd became famous for its bravery and distinguished combat record, fighting in Europe, particularly in Italy and France. They were recognized for their significant contributions to the war effort, receiving numerous decorations and accolades for their actions.

In contrast, the Okies refer to the migrant farmers from Oklahoma who fled the Dust Bowl during the 1930s, the Big Four usually denotes the leaders of key nations during World War I or influential figures in early California development, and the UFW (United Farm Workers) emerged much later as an organization representing the rights of farmworkers, primarily under the leadership of Cesar Chavez, in the 1960s. Each of these groups relates to different historical contexts and social movements, distinct from the military service of the 442nd Regiment during World War II.