Commanded by Colonel Issam Abu Jamra, the Second Brigade during the Mountain War was deployed at the northern port city of Tripoli as part of the Lebanese Armed Forces (LAF) Northern Command. As such, the Brigade took no part in the September 1983 battles for the Chouf District nor the February 1984 battle for the control of the western districts of Beirut. Instead, the LAF Northern Command tasked the Second Brigade of internal security operations in Tripoli, where tensions remained high between local Islamist and secular Left-wing militias following the departure of Palestine Liberation Organization (PLO) guerrilla factions in December 1983. On August 1984, violent clashes erupted between the main Sunni Islamic Unification Movement or IUM (a.k.a. Tawheed) and the Shia Alawite Arab Democratic Party or ADP, with the former been supported by the Mosques Committee and the Islamic Committee. The Tawheed's position was strengthened when they gained control of the port area on August 22, after a fierce battle on the streets of Tripoli that left more than 400 dead. Street fighting dragged for some days until September 18, when it was brought to an end by a Syrian-mediated peace agreement between the IUM and the ADP.