Why did the committee advising President Truman recommend that bomb should not be demonstrated and instead should be used against the enemy

Explanation:

At the time the U.S. dropped the atomic bombs on Japan, there were only two bombs produced. There was a worry therefore that sparing one bomb simply for a demonstration would be a waste.

There was also no guarantee that the demonstration would work because the Japanese had shown themselves particularly stubborn in the struggle. A situation might have arrived therefore where the Americans would demonstrate the bomb and the Japanese would keep fighting which would have meant that the bomb was wasted.

operation overlord was the codename for the battle of normandy, the allied operation that launched the successful invasion of german-occupied western europe during world war ii. the operation was launched on 6 june 1944 with the normandy landings