Hiroshima is (or was) a city located near the southern tip of Japan.
Little is known about the city outside of its real-world contemporary history. All that is known about the city in the Starship Troopers universe is that it and its city fathers were "destroyed".
It is unclear if the mention of its destruction referred to the Second World War atomic bombing of the city or a subsequent event in Earth's future history.
Dizzy: My mother always told me that violence doesn't solve anything.
Jean Rasczak: Really? I wonder what the city founders of Hiroshima would have to say about that.
[to Carmen]Jean Rasczak: You.
Carmen: They wouldn't say anything. Hiroshima was destroyed.
Jean Rasczak: Correct. Violence has resolved more conflicts than anything else. The contrary opinion that violence doesn't solve anything is merely wishful thinking at its worst.