OEF meaning in Governmental ?

Operation Enduring Freedom (OEF) was the official name used by the U.S. government for the Global War on Terrorism. On 7 October 2001, in response to the September 11 attacks, President George W. Bush announced that airstrikes targeting Al-Qaeda and the Taliban had begun in Afghanistan. Operation Enduring Freedom primarily refers to the War in Afghanistan, but it was also affiliated with counterterrorism operations in other countries, such as OEF-Philippines and OEF-Trans Sahara.

After 13 years, on 28 December 2014, President Barack Obama announced the end of Operation Enduring Freedom in Afghanistan. Subsequent operations in Afghanistan by the United States' military forces, both non-combat and combat, occurred under the name Operation Freedom's Sentinel.