Washington (CNN) -- The secretary of the U.S. Army has disciplined nine officers for failing to warn of problems with Maj. Nidal Hasan -- accused of committing the 2009 Fort Hood, Texas, shootings -- before he was assigned to Fort Hood.
Secretary John McHugh's move comes after the service reviewed the circumstances leading up to the Fort Hood shootings, in which 13 people were killed and 43 others were wounded.
McHugh "initiated adverse administrative action against nine officers for administrative and leadership failures relating to the career" of Hasan, according to an Army statement released Thursday.
The officers were not identified. The Army statement said the severity of the discipline varied depending on the actions of each officer.
The Army report found no single factor ultimately led to the shooting but "certain officers clearly failed to meet the high standards expected of their profession."
In addition, the Army secretary has ordered a review of how evaluations of personnel are conducted and procedures for training and counseling.