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

2003

• Operation Iron Justice in Iraq

Casualties on December 18:

• ALLISON, GLENN RICHARD – December 18, 2003
• TAPIA, SAMUEL – December 18, 2005
• KRYST, KEVIN MICHAEL – December 18, 2006
• MINTZLAFF, BRIAN LEE – December 18, 2006
• WARE, ALBERT DONO – December 18, 2009
• TORBERT, ERIC MICHAEL JR – December 18, 2010
• BOHLER, PETER CHRISTOPHER – December 18, 2013
• FORDE, OMAR WILFRED – December 18, 2013
• GORDON, TERRY KISHAUN – December 18, 2013
• SILVERMAN, JOSHUA BENJAMIN – December 18, 2013