What was the date of the first atomic bomb explosion ?
On August 15 , 1945 , after the bombings of Hiroshima and Nagasaki , he made apparent reference to the atomic bomb in his Imperial Rescript on the Termination of the War : " Moreover , the enemy has begun to employ a new and most cruel bomb , the power of which to do damage is , indeed , incalculable , taking the toll of many innocent lives .