The following are events related to the Global War On Terrorism (GWOT) that took place on this day.

2001

• The pilots of Marine Fighter Attack Squadron 251 became the first Marines known to be engaged in combat in Afghanistan, supporting Operation Enduring Freedom. The Marines, piloting Hornets, took off from the deck of the aircraft carrier Theodore Roosevelt, and flew several bombing missions, including the destruction of a bridge in northern Afghanistan. The Theodore Roosevelt, carrying approximately 195 Marines, was leading one of the four Navy battle groups in the region.

2017

• A U.S. drone strike in Paktia province, Afghanistan, killed Omar Khalid Khorasani, the leader of the JuA, and 9 other terrorists.

Casualties on October 18:

• BERNSTEIN, DAVID RICHARD – October 18, 2003
• HART, JOHN DANIEL – October 18, 2003
• AMUNDSON, WILLIAM MADDEN JR – October 18, 2004
• EHRLICH, ANDREW CHRISTOPHER – October 18, 2004
• FRANTZ, LUCAS ALLEN – October 18, 2005
• PILLEN, PAUL JARED – October 18, 2005
• BARLOW, PATRICK O’NEAL – October 18, 2006
• BROZOVICH, DANIEL ANTHONY – October 18, 2006
• MONTALVO, JESUS MANUEL – October 18, 2006
• PEREZ, JOSE ROBERTO – October 18, 2006
• FONTENOT, JARRED SETH – October 18, 2007
• GEIGER, WAYNE MARSHALL – October 18, 2007
• RIVERA, DANIEL JOSE – October 18, 2009
• WILSON, SHANE GREGORY – October 18, 2012
• TURNBULL, LYLE DERVIN – October 18, 2013