All of these celebrated national facilities variously feature very vital war/ancestor research information — WWII, Korean War and the Vietnam War — in the form of war-associated: articles, period newspapers and video interviews with Veterans (or their friends or relatives), plus a huge amount of video-ed commentary & analysis and thousands of books (best-sellers and minor-release (but information-dense) ones alike).
1) National WWII War Museum: https://www.nationalww2museum.org/
2) Korean War Memorial Museum:
https://tinyurl.com/4zujj33e
3) National Vietnam War Museum:
https://tinyurl.com/d5dj62pp
Quail Creek Genealogy Club 