<P> The War in Afghanistan ( or the U.S. War in Afghanistan ; code named Operation Enduring Freedom -- Afghanistan ( 2001 -- 2014 ) and Operation Freedom 's Sentinel ( 2015 -- present ) ) followed the United States invasion of Afghanistan of October 7 , 2001 . The U.S. was supported initially by the United Kingdom and Canada and later by a coalition of over 40 countries , including all NATO members . The war 's public aims were to dismantle al - Qaeda and to deny it a safe base of operations in Afghanistan by removing the Taliban from power . The War in Afghanistan is the second longest war in United States history , behind the Vietnam War . </P>
<P> The War in Afghanistan ( or the U.S. War in Afghanistan ; code named Operation Enduring Freedom -- Afghanistan ( 2001 -- 2014 ) and Operation Freedom 's Sentinel ( 2015 -- present ) ) followed the United States invasion of Afghanistan of October 7 , 2001 . The U.S. was supported initially by the United Kingdom and Canada and later by a coalition of over 40 countries , including all NATO members . The war 's public aims were to dismantle al - Qaeda and to deny it a safe base of operations in Afghanistan by removing the Taliban from power . The War in Afghanistan is the second longest war in United States history , behind the Vietnam War . </P>
when did us go to war in afghanistan
when did us go to war in afghanistan
October 7 , 2001
October 7 , 2001