The Sri Lanka Army at its inception was employed in internal security Army Troops deployed in Internal Security duties, maintaining law and order and ceremonial duties. During this period, the 1954 Harthal and communal violence in 1958, were among some of the main internal security operations the Army had to undertake. Further, some units of the Army were deployed in the northern part of the country for the purpose of preventing the entry of illegal immigrants from South India.

However, events in the country took a dramatic turn in 1971 when the JVP insurrection broke out. For the first time in post-independence history, the Army was involved in active combat. The prompt assistance granted by foreign countries from various parts of the world helped the Army to restore order in the country within a period of two months. The period from 1971 to 1981 was relatively peaceful except for the communal riots in August 1977. The era between 1977 and 1981 was the breeding period of northern terrorism.

• EELAM WAR I

• EELAM WAR II

• EELAM WAR III

• OP JAYASIKURU

• OPERATION RANAGOSA

• OPERATION RIVIBALA

• OPERATION RIVIKIRANA I

• OPERATION KINIHIRA I

• OPERATION KINIHIRA II

• OPERATION KINIHIRA IV STAGE I

• OPERATION KINIHIRA V

• OPERATION KINIHIRA VIII

• OPERATION KINIHIRA IX

• OPERATION TO MUTTUR

• VAKARAI HUMANITARIAN OPERATION

• BATTICALOA HUMANITARIAN OPERATION

• MUTTUR WEST KANDALKADU OPERATION

• THOPPIGALA FINAL OPERATION

• LIBERATION OF MAVIL ARU (26/07/2006 - 08/08/2006)

• LIBERATION OF SILAVATHURA (1/09/2007 - 2/09/2007)

• UYILANKULAM LTTE ENTRY/EXIT POINT CAPTURED

• LTTE STRONGHOLD VIETNAM BASE FALLS INTO ARMY HAND

• ARMY CAPTURE CHETTIKULAM AREA FROM LTTE

• MORE VILLAGE AREA BROUGHT UNDER TROOPS

• SOUTH OF ADAMPAN TANK FALLS TO ARMY

• AREA NORTH OF GIANT TANK CAPTURED

• TERRORIST DOMINATED AREA OF 2.5 SQ KM

• ARMY CAPTURES AREA NORTH OF UYILANKULAM

• FAMOUS LTTE’S “LIMA BASE–3” FALLS ON TROOPS

• HOLY MADHU CHURCH LIBERATED BY SECURITY

• LTTE'S FAMOUS ONE EIGHT BASE FALLS

• LTTE'S ADAMPAN MAJOR BASTION FALLS

• PALAMPIDDY FALLS TO ARMY'S HAND

• MUNAKKAM LTTE MILITARY COMPLEX FELL A MAJOR SETBACK

• PERIYAMADU TANK AREA FALLS UNDER TROOPS

• IMPREGNABLE LTTE 54-BASE SHATTERED; 25 TERRORISTS KILLED

• TROOPS CAPTURED PERIYAMADU

• LTTE'S PARAPPAKKADANTAN STRONGHOLD FALLS

• MANNAR 'RICE BOWL' BROUGHT UNDER TROOPS SMASHING LAST LTTE BASTION

• Tigers’ "Michael Base" Now Under Army Troops

• Army Captures NANDANKANDAL

• Vidattaltivu Sea Tiger Base Falls Under Troops

• Army Captures Illuppaikaddavali LTTE Military Bases

• 57 Div Troops & Special Forces Capture Area to South of Mallavi Town

• Troops Liberate Vellankulam, Last LTTE Bastion in Mannar

• Troops Enter Kalvilan

• Tigers' Mulankavil Base in Kilinochchi District Captured

• LTTE’s “Jeevan Base” in Welioya Captured

• Tunukkai, Uyilankulam

• Palamoddai & Ulathuvely, Latest to Fall Under Troops

• LTTE's Mallavi Nerve Center Cleared

• Sea Tigers’ ‘Pasarai’ Sea Tiger Camp Stormed & Captured

• Troops on Kokavil Outskirts Recall Memories

• Troops Locate Terrorists' Clandestine Airstrip; A Major Breakthrough

• Troops Capture Manniyakulam Area from Tigers

• Strategic Vannerikkulam Finally Falls to Troops

• Terrorists Lose Control of Gajabapura

• Jeyapuram Brought under Troops

• LTTE's Infamous FDL in Nachchikuda Falls

• Entire Akkarayankulam Built-Up Now in Army Hands

• Coastal Tiger Bastion Kiranchi Falls

• Entire Triangular Devil's Point Now in Army Hands

• LTTE's KILLING FIELD 'POONERYN' in ARMY HANDS

• World’s Ruthless Terrorists Lose Mankulam

• Olumadu on Mullaittivu Road Taken

• Army Capture Otiyamalai

• A-9 HIGHWAY UP TO PULIYANKULAM & ALAMPIL TOWN CAPTURED

• LTTE LOSES KANAKARAYANKULAM TOWN

• TERUMURIKANDI ROAD JUNCTION THAT CONNECTS A-32 & A-9 CAPTURED

• AMPAKAMAM, LTTE STRONG HOLD FALLS

• TROOPS ESTABLISH CONTROL IN NEDUNKENI TOWN

• TROOPS MAKE TIGERS FLEE SINNAPARANTHAN

• 350 M LONG & 25 M WIDE LTTE RUNWAY WITH SECURITY TRENCHES CAPTURED

• TASK FORCE-1 ADVANCING ON B-69 CAPTURES NALANAWAKULAM

• ROAD FROM PULIYANKULAM UP TO NEDUNKERNY BROUGHT UNDER ARMY CONTROL

• ARMY ENTERS STRATEGIC PARANTHAN TOWN

• TERRORISTS LOSS IRANAMADU

• PRABHA THAMBI'S UTOPIAN KILINOCHCHI 'EELAM' CAPITAL FALLS

• TIGERS HUMILIATED FURTHER WITH THE FALL OF ODDUSUDAN

• MANKULAM – ODDUSUDAN A-34 ROAD IN ARMY HANDS

• HEROIC SOLDIERS TAKE PALLAI

• SORANPATTU, COMES UNDER ARMY

• LTTE COMMAND CENTRES IN KOVILKADU CAPTURED

• ELEPHANT PASS ISTHMUS IN ARMY HANDS; A-9 HIGHWAY ENTIRELY CLEARED

• MURASUMODDAI, THE LATEST TO FALL

• 59 DIVISION TROOPS CAPTURE LTTE'S FOURTH AIRSTRIP

• CHUNDIKULAM, LAST LTTE BASTION IN JAFFNA DISTRICT IN ARMY HANDS

• IRANAMADU EAST LTTE AIRSTRIP IN ARMY HANDS

• TROOPS WREST CONTROL OF THE IRANAMADU TANK BUND IN ITS ENTIRETY

• TIGERS EVICTED FROM DHARMAPURAM

• LTTE'S 1 KM LONG SIXTH RUNWAY CAPTURED

• 57 DIVISION TROOPS CAPTURE RAMNATHPURAM

• TROOPS ENTER VISUAMADU SMASHING ENEMY DEFENCES

• LTTE’S MULLAITTIVU BASTION FALLS

• LAST & SEVENTH LTTE AIRSTRIP FALLS INTO ARMY HANDS

• ARMY CAPTURES LAST SEA TIGER BASE IN CHALAI & CLEARS ENTIRE VISUAMADU AREA

• PUTHUKKUDIYIRUPPU JUNCTION FALLS IN ARMY HANDS

• TROOPS ENTER PUTHUMATTHALAN

• WORLD'S MOST RUTHLESS TERRORIST LEADER PRABHAKARAN CONFIRMED DEAD

• WANNI OPERATIONS THAT SAW CULMINATION OF THE LONG-RUNNING LTTE WAR