21st Century
- Sierra Leone Civil War (2000)
- War on Terror (2001–Present)
- War in Afghanistan (2001–Present)
- Iraq War and Iraqi insurgency (2003–2009)
- Libyan Civil War (2011)
Read more about this topic: Military History Of The United Kingdom
Famous quotes containing the word century:
“Never make a companion equal to a brother.”
—Hesiod (c. 8th century B.C.)