1979
April 7: ULFA was formed by Paresh Baruah at the Rang Ghar Pavillion of the Aham Kingi (Sibsagar).
1983-1984
ULFA remained largely dormant except for recruiting activities.
1986
ULFA engaged in fundraising via extortion, set up training sites and secured arms.
Nov. 7: the Indian government imposed President's Rule on Assam, declaring it a “disturbed area” and banning ULFA.
1991
July: ULFA abducted 14 people, including an engineer and a Soviet citizen, seeking a hefty ransom.
1996
ULFA formed a military wing known as San Jukta Mukti Fouj (SMJ).
1997
The ULFA General Secretary Anup Chetia was arrested.
ULFA’s chairman attended the U.N. Working Group on Indigenous Populations in Geneva.
1998
April 8: ULFA Vice-Chairman Praqdip Gogoi was arrested.
2000
April 7: Residents of Assam supported a rally for peace. Several local newspapers condemned ULFA violence.
2002
July 17: UNLF admitted to killing three security personnel.
2003
ULFA scaled up terrorist activities with a Jan. 2 attack on a security force (no casualties); a March 7 attack on a police barracks (no fatalities); a March 8 attack on oil and gas facilities (property damage) and a migrant camp (two fatalities).
2004
ULFA continued its attacks, mostly on government targets and buildings as well as energy facilities.
2005
March 11: ULFA was suspected of setting off several bombs in Assam. Eight blasts were detonated, including two that struck a police station and the Lokapriya Gopinath Bardoloi international airport. One sub-inspector was killed in the attacks and several bystanders and police officers were hurt.
June 3: New Delhi invited ULFA to peace talks aimed at ending the decades-long insurgency.
Aug. 8: Separatist rebels in Assam bombed a village and three oil pipelines. Four people died and seven were injured in an explosion at a bus station in the Kamrup district village of Boko attributed to ULFA. Oil pipelines in three separate districts were also attacked, resulting in disrupted crude oil supplies to local refineries.
Sept. 8: ULFA appointed an 11-member Peoples’ Consultative Group (PCG) to conduct negotiations with the Indian government. ULFA also called a strike to protest the recent death of its founder. The group charged that Robin Handique was poisoned while in a Tezpur jail.
Sept. 15: Government forces battled ULFA, with troops surrounding a rebel base 370 miles east of Dispur. A dozen people were killed in rocket attacks.
Sept. 22 – Oct. 3: Threatening to withdraw from peace talks, ULFA leaders demanded a halt to army operations in Assam. By early October, the army had halted some operations, but ULFA said this was inadequate.
2006
January/June: Attacks continued through the first part of the year in much the same fashion as the two previous years.
Jan. 23: Government negotiators announced peace talks with ULFA were scheduled for February.
Aug. 13: The Indian government announced a 10-day suspension of army activities against ULFA. The suspension was later extended by 25 days.
September: ULFA named a consultative group to explore negotiations with the government.
Sept. 13: ULFA representatives called for direct peace talks between the group and Prime Minister Manmohan Singh. The government sought a formal petition from ULFA outlining the scope of talks and nominating a ULFA negotiating team. ULFA, as a precursor to negotiations, sought the release of five of its leaders from jail.
Sept. 25: The Indian army launched a major operation against ULFA, ending a truce that had been established to further peace talks. The offensive began after the assassination of a tea estate manager who apparently refused to be extorted by ULFA.
Nov. 5: Two explosions killed 14 people and wounded 45 in Gauhati, Assam. Officials suspected ULFA was behind the attacks.
Nov. 9: The Indian government decided to deploy up to 10 paramilitary companies to counter ULFA operations in Assam. New Delhi said ULFA had used the recent respite in military operations to re-equip and regroup, rather than negotiate.
2007
Jan. 5-6: ULFA rebels attacked Hindi-speaking migrant laborers in the northern Assam districts of Dibrugarh and Tinsukia, killing 48. More than 70 people were killed in ULFA attacks in a matter of days.
Jan. 11: New Delhi stepped up its military offensive against ULFA in Assam and the neighboring state of Arunachal Pradesh. The military also mounted riverine patrols along the border with Bangladesh to prevent ULFA personnel from fleeing.
Jan. 18: The 311 Mountain Brigade, trained in counterinsurgency tactics, joined the forces combating ULFA in Dibrugarh.
Jan. 26: March 10: ULFA assassinated four Congress Party politicians in Sivasagar, Golaghat and Kamrup.
Aug. 8: As many as 30 ULFA militants raided the remote hamlet of Aampahar in Assam's Karbi Anglong district and killed eight Hindi-speaking villagers.
Aug. 11: Two insurgent groups, ULFA and the Karbi Longri National Liberation Front, attacked the civilian population in Assam's Karbi Anglong district. The insurgents raided Dehori village and murdered 13 people.
Sept. 6: Fourteen ULFA leaders surrendered to police in Guwahati. The rebels were from the 28 and 709 battalions.
Sept. 30: Police reported that ULFA was responsible for two bombings in Upper Assam. The first blast occurred in a Tinsukia neighborhood; the second explosion took place within minutes of the first at a cinema in Doomdooma, an industrial town about 15 miles from Tinsukia. At least one person was killed and 36 were injured as a result of the Tinsukia blast. Separately, ULFA militants were suspected of blowing up a crude oil pipeline in Bhekolajan.
Nov. 5: Two senior ULFA militants were arrested by security forces in the Sivasagar district. Somdev Phukon, an ULFA second lieutenant and his wife, listed as a corporal in the militant group, had arrived in Assam from Myanmar in October to replace Sujit Mohan as the commander of the ULFA's 28th battalion. Mohan was transferred to another ULFA unit.
Dec. 20: Tinsukia police arrested a doctor for providing medical aid to ULFA militants. Police charged that Dr. B.C. Bora not only treated ULFA members at the nursing home he operated but also visited ULFA camps in Arunachal Pradesh.
2008
Feb. 14: The government reported it was not ready to hold any talks with ULFA regarding Assam's sovereignty. Home Secretary Madhukar Gupta said ULFA needed to give up the use of violence before any peace talks could commence and that all talks must be direct without any involvement of mediators.
Feb. 10: Assam police said they interrupted an ULFA plan to hijack an airplane from Guwahati airport to Pakistan. Security forces arrested three persons, one of whom reportedly revealed that ULFA had been plotting to hijack the aircraft.
April 16: An Indian government official told the Parliament that intelligence indicated ULFA had been using territory in Bangladesh to procure and smuggle arms and explosives into India.
Aug. 28: Militants associated with ULFA and other groups surrendered to the Army in Rangia. The militants handed over a large cache of arms and ammunition.
Oct. 13: The government reported that ULFA was heavily recruiting new cadres in the Sivasagar, Jorhat and Golaghat districts. New recruits were reportedly being sent to Burma for training under the guidance of a senior ULFA cadre.
Oct. 30: In a series of 13 explosions, 77 persons were killed and 300 were injured in the Assam capital of Dispur, the nearby city of Guwahati and three other districts. Officials suspected that Harakat ul Jihad-I-Islami Bangladesh militants or ULFA insurgents were responsible. ULFA denied any involvement.
Dec. 4: Indian investigators said their probe of the Oct. 30 bombings established the involvement of both ULFA and the National Democratic Front of Bodoland (NDFB). Evidence was said to implicate top officials of both groups in the bombings.
2009
Jan. 1: ULFA militants triggered several bomb blasts in three different areas of GuwahatiCity, killing five persons. The blasts occurred shortly before the arrival of Union Home Minister P. Chidambaram. Police maintained that the bombs were set by ULFA.
Jan. 12: The Assam state government reported to the legislature that eight militant groups, including ULFA, remained active in the province. Both ULFA and NDFB were said to be carrying out subversive activities in Assam under the influence of foreign powers; many leaders were reported to be directing activities from outside the country. In 2008, 124 militants belonging to the eight groups were killed and over 1,300 were arrested. Security forces recovered 203 bombs and 202 grenades during the year.
Feb. 3: Five members of an ULFA faction favoring peace talks arrived in New Delhi to hold discussions with the government.
Feb. 21: The pro-talks wing of ULFA submitted an 18-point list of demands to Indian Prime Minister Manmohan Singh in support of ULFA's goal for full autonomy in Assam.