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Historical Office > DOD History > Pentagon > History
 
Three buildings housing great institutions of the U.S. government have come to be regarded as national monuments and have become part of national and international history: the White House, the Capitol, and the Pentagon. 
  
Pentagon Self Guided Tour Brochure - U.S. Department of Defense
 
At 9:37 a.m., Sept. 11, 2001, American Airlines Flight 77 deliberately crashed into the Pentagon, killing everyone on board and 125 people in the building. This memorial commemorates those killed in the attack. 
  
WELCOME TO THE PENTAGON HANDBOOK
 
The Welcome to the Pentagon Handbook provides all Pentagon employees with a detailed reference guide to the services found within the 200-acre complex. The chapters provided will help you become familiar with the basic information about the following services: 
  
WELCOME TO THE PENTAGON 2025
 
The Pentagon Circulator provides free, convenient transportation for all personnel with a Common Access Card (CAC) or a Pentagon Facilities Alternative Credential (PFAC) on the Pentagon Reservation. 
  
Military and Security Developments Involving the People s Republic of ...
 
A Report to Congress Pursuant to the National Defense Authorization Act for Fiscal Year 2000, as amended Section 1202 of the National Defense Authorization Act for Fiscal Year 2000, Public Law 106-65, as amended, provides that the Secretary of Defense shall submit a report “in both classified and unclassified form, on military and security developments involving the People’s Republic of ... 
  
media.defense.gov
 
The Secretary of War announced new memorandums addressing significant changes to strategic policies and procedures within the Department of Defense. 
  
WASHINGTON , DC 20301-1000 - media.defense.gov
 
MAR - 6 2025 MEMORANDUM FOR SENIOR PENTAGON LEADERSHIP COMMANDERS OF COMBATANT COMMANDS DEFENSE AGENCY AND DOD FIELD ACTIVITY DIRECTORS SUBJECT: Directing Modern Software Acquisition to Maximize Lethality selves operating in today. Software is at the core of every weapon and supporting system we field to remain the strongest, most lethal f 
  
Army-Address-Directory
 
Office of the Secretary of the Army, 101 Army Pentagon, Washington, DC 20310-0101. Office of the Under Secretary of the Army, 102 Army Pentagon, Washington, DC 20310-0102. 
  
CONTACT US - U.S. Department of Defense
 
CONTACT THE DEPARTMENT OF WAR PUBLIC COMMUNICATIONS - DoW PUBLIC AFFAIRS 1400 Defense Pentagon Washington, DC 20301-1400 Public Inquiries: 703-571-3343 Press/Media: 703-697-5131 
  
Unleashing U.S. Military Drone Dominance
 
SECRETARY OF DEFENSE 1000 DEFENSE PENTAGON WASHINGTON, DC 20301 -1000 MEMORANDUM FOR SENIOR PENTAGON LEADERSHIP 
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