The Doolittle Raid is viewed by historians as a major morale-building victory for the United States.
Although the damage done to Japanese war industry was minor, the raid showed the Japanese that their homeland was vulnerable to air attack, and forced them to withdraw several front-line fighter units from Pacific war zones for homeland defense.
More significantly, Japanese commanders considered the raid deeply embarrassing, and their attempt to close the perceived gap in their Pacific defense perimeter led directly to the decisive American victory at the Battle of Midway in June 1942.

When asked from where the Tokyo raid was launched, President Roosevelt coyly said its base was Shangri-La, a fictional paradise from the popular novel Lost Horizon.
In the same vein, the U.S. Navy named one of its Essex-class fleet carriers the USS Shangri-La.
The Doolittle Raid is viewed by historians as a major morale-building victory for the United States. Although the damage done to Japanese war industry was minor, the raid showed the Japanese that their homeland was vulnerable to air attack, and forced them to withdraw several front-line fighter units from Pacific war zones for homeland defense. More significantly, Japanese commanders considered the raid deeply embarrassing, and their attempt to close the perceived gap in their Pacific defense perimeter led directly to the decisive American victory at the Battle of Midway in June 1942.
When asked from where the Tokyo raid was launched, President Roosevelt coyly said its base was Shangri-La, a fictional paradise from the popular novel Lost Horizon. In the same vein, the U.S. Navy named one of its Essex-class fleet carriers the USS Shangri-La.
William John Dieter