Recognizing that responsible commanders must always assume the blame for the failings within their respective domains, former U.S. General George C. Marshall and General Leonard T. Gerow stood up and claimed responsibility for leaving Pearl Harbor vulnerable to Japanese attack.
To read this article is to understand that Marshall was responsible for the lack of preparedness at Pearl Harbor.
The findings of the Congressional Investigation of the Pearl Harbor Attack can be read and downloaded by clicking here.
Additional articles about the Pearl Harbor attack can be found here...