In retaliation, the United States, together with its allies including United Kingdom, went to war against the Taliban in Afghanistan. On October 7, 2001 the U.S. launched Operation Enduring Freedom to battle terrorist groups in Afghanistan and throughout the world. Soon, military bases were established near most of the major cities in the country. However, few of the Taliban or al-Qaeda were killed or captured. Most of them fled into the mountains and rural areas of Afghanistan. The Afghanistan War, also referred to as the War in Afghanistan or operation enduring freedom, is the period between 2001 - 2014 in which the United States of America invaded Afghanistan after the September 11, 2001 terror attacks. On October 7, 2001 the United States and Britain began to bomb terrorist targets, such as the Taliban's military forces and some camps, in Afghanistan.