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

2002

• The Marine Corps took over the training of troops from the former Soviet republic of Georgia from the Army Special Forces units after the graduation of the first class. The Marine-led joint training team of about 60 troops picked up the next class that began February 2003. The Georgia Train and Equip Program commenced in May under Special Operations Command, Europe.

2003

• Operation Panther Backroads in Iraq

2005

• End of Operation Liberty Express in Iraq

2006

• Marine Corps Mobilization Command (MOBCOM) mailed out 150 letters to Individual Ready Reserve (IRR) Marines, calling them back to active duty for approximately one year. IRR Marines are Marines that have completed their active-duty or Reserve contracts and whose only requirement to the Corps is to keep their addresses up to date with MOBCOM in the rare chance there is a need to recall them.
• Start of Operation Falcon Summit in Afghanistan
• Start of Operation Eagle Watch in Iraq

Casualties on December 15:

• SOUSLIN, KENNETH CLARENCE – December 15, 2003
• MORTON, JOHN DAVID – December 15, 2005
• BOYCE, TIMOTHY RICK – December 15, 2005
• LUCAS, JOSEPH ALAN – December 15, 2005
• PHANEUF, JOSEPH EDGAR II – December 15, 2006
• BALINT, PAUL JR – December 15, 2006
• KAHALEWAI, HENRY KANEHUNAMOK JR – December 15, 2006
• PRATT, AUSTIN DAVID – December 15, 2007
• CAMPBELL, ANTHONY CHARLES JR – December 15, 2009
• CUTSFORTH, SEAN RUSSELL – December 15, 2010
• SCHMALSTIEG, JUSTIN EDWARD – December 15, 2010
• BONILLA PEREZ, AXEL OMAR – December 15, 2017