Did the U.S. attack first after Sept. 11 2001?

Yes, the U.S. initiated military action shortly after the September 11, 2001 attacks. On October 7, 2001, the U.S., along with coalition forces, launched Operation Enduring Freedom, targeting Taliban forces and al-Qaeda operatives in Afghanistan. This response was framed as a direct retaliation for the attacks and aimed at dismantling terrorist networks.