Operation Enduring Freedom (OEF) was a military campaign launched by the United States in response to the September 11, 2001, terrorist attacks. The primary objective of Operation Enduring Freedom was to combat terrorism, specifically targeting the al-Qaeda terrorist organization and its Taliban hosts in Afghanistan.
The operation began on October 7, 2001, with the initiation of airstrikes against Taliban and al-Qaeda targets in Afghanistan. It quickly expanded to include ground operations, with the United States leading a coalition of international forces in a concerted effort to oust the Taliban regime from power and dismantle al-Qaeda's terrorist infrastructure.
Operation Enduring Freedom saw the deployment of significant military assets, including ground troops, special forces units, and air power, to conduct a range of counterterrorism operations, including targeted airstrikes, raids, and ground combat missions. The operation also involved efforts to train and equip Afghan security forces to take on a greater role in securing their country.
While the initial phase of Operation Enduring Freedom succeeded in ousting the Taliban regime from power and disrupting al-Qaeda's operations in Afghanistan, the conflict evolved into a protracted insurgency and nation-building effort. The operation ultimately led to the establishment of a new Afghan government and the deployment of international forces in support of stability and reconstruction efforts in the country.
Operation Enduring Freedom formally ended in December 2014, but U.S. military involvement in Afghanistan continued under a separate mission, Operation Freedom's Sentinel, which aimed to train and advise Afghan security forces and conduct counterterrorism operations against residual threats.