Hiroshima

Hiroshima was a pre-War city in Japan.

Background
Hiroshima is mentioned in the Citadel laboratory terminals, mentioning Liberty Prime's presence on the Anchorage battlefield would have the same effect on the Chinese as the bombing of Hiroshima had on the Japanese. In the Fallout 4 intro, Nate's spoken narrative explains that the United States ended World War II by dropping atomic bombs on Hiroshima and Nagasaki in 1945.

Appearances
Hiroshima is mentioned in Fallout 2, Fallout 3, Fallout 4, and Fallout Tactics.

Behind the scenes
Hiroshima is a real world Japanese city.