“These men made up the 100th Battalion and the 442nd Infantry Regimental Cobat Team consisted of some men from Hawaii but most of them were from the internment camps in the Continental USA.”
I think in October 1944 most of the 442nd came from Hawaii and not the mainland. After the rescue of the Lost Battalion probably more replacement soldiers came from the internment camps as conditions for Japanese Americans became more relaxed by 1944.
Happy to say my three uncles served in the 442nd.
I found the movie I talked about here: 99 Nen-No-Ai Japanese American.
It is a drama with great actors (and realistic battle scenes) that pretty much tells the story of how Japanese settled in Seattle, the internment camps, and the heroism of the 442nd. Japanese with English subtitles.
It's a few hours long, but well-worth the time to watch.