Model of limited nuclear attack Russian on coast of the enemy

I don't know about Hiroshima, but what military target was Nagasaki? What I read at the time was that Truman feared that we would lose 60 thousand men trying to take Japan.

Recently, I read that Japanese planes were heading toward San Francisco with Bubonic plague, which were quite successful when dropped in China. The minute they heard that Hiroshima was bombed they turned around.

 

The second atomic bomb was intended for Kokura Arsenal, which was a massive (4100 feet by 2000 feet) factory complex that was Japan's primary source of light and heavy machine guns and 20mm anti-aircraft guns, as well as the ammo for those weapons.

Unfortunately they had to divert to their secondary target, the Nagasaki shipyards, which produced battleships and aircraft carriers. One of those two "biggest battleships in history" was built there, but not the famous Yamato. It was the other one of the two that was less famous.

https://en.m.wikipedia.org/wiki/Japanese_battleship_Musashi
https://en.m.wikipedia.org/wiki/Japanese_aircraft_carrier_Amagi

They then had to divert further and hit the industrial zone north of Nagasaki instead of the shipyards. There, the atomic bomb destroyed the Mitsubishi Steel and Arms Works (which produced steel for the shipyards and used some of that steel to produce naval torpedoes) and the Mitsubishi Ordnance Works (which produced aerial torpedoes and which had designed and built special torpedoes to defeat Pearl Harbor's defenses in 1941).

 

I think it would be more effective to show an image of the torpedo, not just a drawing.