On a gradient disc Azure to Celeste with radiating lines Argent, in base an American bald eagle Proper supporting the United States coat of arms edged Or, in chief the Pentagon building Proper, aerial view and pointing to base, above a Dark Blue scroll edged Dark Red and inscribed LUMEN PER HISTORIAM in White letters, all surrounded by a White designation band, edged in Dark Red and inscribed OFFICE OF THE SECRETARY OF DEFENSE above the eagles wings in Dark Blue letters and HISTORICAL OFFICE below the eagles wings in Dark Blue letters.
The gradient disc background with its radiating lines symbolizes light and draws the viewers gaze to the eagles eye in center, which signifies the key role of the Historical Office as the observer of the Department of Defense. The American bald eagle is an emblem of strength and symbolizes the United States of America and its military establishment. The eagles wings support the designation band inscription, OFFICE OF THE SECRETARY OF DEFENSE, alluding to the Offices supportive role; the wings point slightly downwards, denoting that it is a civilian office. The Pentagon represents the Office of the Secretary of Defense. It is supported by the Historical Offices motto, translated as Light through History, which indicates the role the Office plays in supporting decision makers with historical analysis and context. Red, white and blue are our nations colors and can be seen throughout the seal.