This was the slogan of Japanese militarism in World War II, because there were 100 million people in Japan and 100 million people died in battle.

At the end of World War II, Japan was desperate but refused to surrender. The militarists even tried to make a final bet with all the people, so they put forward this slogan.

That's exactly what happened. The battle between Saipan and Iwo Jima shows that even well-equipped American soldiers have to pay a casualty rate of nearly 1: 1 in the face of Japanese crazy bushido spirit. In this way, to break through Japan, the United States must pay at least 1 10,000 casualties. This is unbearable for the United States, which has reached the stage of victory. So the most terrible weapon of mankind, the atomic bomb, went into actual combat.