This week back in August of 1945, the U.S. dropped two atomic bombs, one on Hiroshima on August 6, then the second one - "Fat Man - on Nagasaki August 9. It was a game changer for the world - the first and, as of this date only time nuclear weapons have been used against populations in war. The destructive power of these bombs ushered in the atomic age and the world was forever changed. The destruction was unprecedented in the history of warfare. The blast incinerated buildings and people, leaving lifelong scars on survivors, The damage was not only physical but also psychological and the people in the cities themselves - indeed the world has never forgotten. Days later, World War II was over, but we continue to live in the shadows of that awful destruction.
...Now I am become Death, the destroyer of worlds.
- Robert Oppenheimer in 1945 after the Trinity atomic bomb test – the first ever nuclear test.
Months later bombs of the same destructive force, about 20 kilotons, were dropped on Japan, specifically the cities of Hiroshima and Nagasaki.
The "Baker" explosion above was part of Operation Crossroads and was the first underwater nuclear weapons test. Considering this photo was taken back in 1946 the quality is exceptional. You can clearly see the massive amount of water forced upward and the fleet of ships anchored around the site. There were 95 ships used to test the effects of this 23 kiloton explosion. Ships as far away as 760 meters (1/2 mile) were sunk and some 2.3km (1.5 miles) away were seriously damaged. (Courtesy of Planet Deadly)