The National Liberation Army, officially the National Liberation Armed Forces of the Free Libyan Republic, formerly known as the Free Libyan Army, was a Libyan military organisation affiliated with the National Transitional Council, which was constituted during the First Libyan Civil War by defected military members and civilian volunteers, in order to engage in battle against both remaining members of the Libyan Armed Forces and paramilitia loyal to the rule of Muammar Gaddafi. Its self proclaimed chief commander was General Khalifa Haftar, although the National Transitional Council preferred to appoint Major General Abdul Fatah Younes Al-Obeidi as its commander-in-chief. It had prepared for some time in portions of Eastern Libya controlled by the anti-Gaddafi forces for eventual full-on combat in Western Libya against pro-Gaddafi militants, training many men before beginning to go on the offensive. They have battled for control of Benghazi, Misrata, Brega, Ajdabiya, Zawiya and Ra's Lanuf as well as several towns in the Nafusa Mountains. They finally began the Battle for Tripoli in August 2011 when they attacked from the west of the city, as well as fomenting an internal uprising on 20 August.

Muammar Muhammad Abu Minyar al-Gaddafi was a Libyan revolutionary, politician and political theorist who ruled Libya from 1969 until his assassination by rebel forces in 2011. He first served as Revolutionary Chairman of the Libyan Arab Republic from 1969 to 1977 and then as the Brotherly Leader of the Great Socialist People's Libyan Arab Jamahiriya from 1977 to 2011. Initially ideologically committed to Arab nationalism and Arab socialism, Gaddafi later ruled according to his own Third International Theory.