Timelines
War Powers

  • 1798
    Force Authorized To Protect Shipping Vessels

  • 1802
    U.S. Navy Battles Barbary Pirates

  • 1812
    Congress Enacts First Declaration Of War

  • 1815
    Congress Authorizes Military Force Against Algeria

  • 1846
    War With Mexico Adds Vast Territories

  • 1861
    Attack On Fort Sumter Spurs Lincoln

  • 1898
    Spanish-American War Ends Swiftly

  • 1917
    United States Drawn Into European War

  • 1941
    WWII Marks Last Declarations Of War

  • 1950
    Truman Bypasses Congress On Korea

  • 1955
    Eisenhower Empowered To Protect Formosa

  • 1957
    Eisenhower Seeks Support In Mideast

  • 1964
    Gulf of Tonkin Resolution Used As War Declaration

  • 1973
    Congress Reasserts Its Authority

  • 1983
    Congress Acts On Lebanon Deployment
    Reagan Launches Grenada Invasion

  • 1989
    Bush Orders Invasion of Panama

  • 1991
    Congress Grants Military Involvement In Gulf War

  • 2001
    Bush Lays Groundwork For War On Terrorism

  • 2002
    Congress Authorizes Use Of Force In Iraq