Unedited War Stories told by the Veterans

Greetings,
I've watched tons of ww2 documentaries. I love the parts where the veterans tell their stories. Unfortunately, they are always edited down to bits and pieces to fit in the documentary.

I'd like to find where I can watch full clips of these vets telling their stories. I know there must be tons of these videos in the national archive or similar place? Any idea where I can find them? or buy them?

Also interested in Korea and Vietnam stories.

I've been able to buy a few rare videos that are just stories, but they seem to be few and far between.
Any input will be appreciated.

Thanks,

CS