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

2003

• I MEF began redeploying its forces in central and northern Iraq into its zone of responsibility. The new mission was one of security, humanitarian assistance, and reconstruction.
• Jamal Mustafa Abdullah Surrendered. He was the 9 of Clubs in Iraq’s Most Wanted Deck of Playing Cards.

Casualties on April 20:

• FOX, BRADLEY CHARLES – April 20, 2004
• GELINEAU, CHRISTOPHER DAVID – April 20, 2004
• HARRIS-KELLY, LEROY – April 20, 2004
• CANNAN, KELLY MATTHEW – April 20, 2005
• MORTENSON, MARTY GARTH – April 20, 2005
• RAMSEYER, JASON CARROLL – April 20, 2006
• VAN AALTEN, ALEXANDER – April 20, 2007
• BISHOP, JEFFREY ADAM – April 20, 2007
• MORTON, CHERIE LYNN – April 20, 2008
• AUSTIN, BARRETT LYLE – April 20, 2013
• RILEY, RYAN DENNIS-ORIN – April 20, 2019