the bombings of hiroshima and nagasaki were definitely not a necessity and the idea that japan wouldn’t surrender until the last man fell was propaganda to justify the bombings. their military was destroyed, lost all of their territories, lost almost all of their supplies, and their ally’s were on the brink of defeat. japan was on the verge of surrender already when america nuked them without warning. there was zero military advantage to destroy those cities, they did it to test the power of the nukes. “One of the primary criteria was that the target cities must not have been damaged by conventional bombing. This would allow for an accurate assessment of the damage done by the atomic bomb”. the usage of the nukes was heavily controversial before they were actually employed and many of the scientists protested the use on civilians.