the answer to the question: It damaged the Japanese governments prestige.
date and time of the raid:April 18,1942.
description: this raid was operated by United States on Japanese capital Tokyo. according to the data of this war there was 50 Japanese were killed by US,400 were injured and a number of petrol boat and aircraft were destroyed by US force.But rather than this casualty the main loss for Japanese was loosing against US propaganda.The mental strength of US army raised with this raid and the Japanese people started to doubt about the strength of Japanese army. So it was a damage to the prestige of Japanese government.