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

2003

• US Special forces and Afghan forces were searching a compound in the mountains near Spin Boldak, Kandahar province, Afghanistan when they were engaged by 3 fighters loyal to the Hezb-e Islami Gulbuddin (HIG) (that was designated a terrorist group on February 19), killing one, wounding and capturing another. After they interrogated the prisoner they divulged the location of 80 other HIG fighters in the mountains, they called in air support from B-1 bombers, F-16s, AC-130s and Apache helicopters, before Coalition troops moved in. At least 18 HIG fighters were killed, it was the largest engagement since Operation Anaconda.

2004

• The preliminary hearing for three Marine reservists accused of brutality towards Iraqi POWs at the Whitehorse detention center outside of Nasiriyah, Iraq, opened at Camp Pendleton, California. The Marines, members of 2d Battalion, 25th Marines, supposedly beat and kicked prisoners and two of the three Marines faced negligent homicide charges after an Iraqi POW was found dead following the alleged treatment.

2006

• End of Operation Koa Canyon (Wadi Aljundi) in Iraq

Casualties on January 27:

• AUGUST, MATTHEW JOSEPH – January 27, 2004
• HOFFMAN, JAMES THOMAS – January 27, 2004
• JAMES, LUKE SAMUEL – January 27, 2004
• KINNEY, LESTER ORMOND II – January 27, 2004
• MOOTHART, TRAVIS AARON – January 27, 2004
• MRACEK, CORY RYAN – January 27, 2004
• BEATTY, JONATHAN SCOTT – January 27, 2005
• LUNA, KEVIN MICHAEL – January 27, 2005
• BRIXEY, BILLY DON JR – January 27, 2006
• LOPEZLOPEZ, HUGO RAZZIEL – January 27, 2006
• GARRIGUS, MICKEL DAVIED – January 27, 2007
• MELIA, ANTHONY CHARLES – January 27, 2007
• ST JOHN, JON BAILEY II – January 27, 2007
• SWANSON, TIMOTHY ALLEN – January 27, 2007
• TOOMALATAI, DAVID TIPO – January 27, 2007
• MILLER, MIKEAL WAYNE – January 27, 2008
• ROGERS, ALAN GREG – January 27, 2008
• JOHNSON, TREVOR JERIMIAH – January 27, 2009
• WALLACE, DAVID WILLIAM III – January 27, 2009
• PHANEUF, RYAN SCOTT – January 27, 2020
• VOSS, PAUL KENNETH – January 27, 2020