Missions Four missions were planned and assigned to the nationwide 5 April attack. The main responsibility for the attacks was given to the student wing, which Wijeweera had called the "Red Guard". The first of the four missions was to attack the
Panagoda Cantonment, which was one of the country's largest military installations and housed a large
arsenal. Piyasiri was in charge of the attack by 800 students, who were divided into groups of twenty-five; a smaller attack was to be made on
RCyAF Katunayake. The second mission, led by Nimal,
Somawansa Amarasinghe, Sanath Kumar, and Lal Pieries with more than 50 students, was to abduct the prime minister. The third mission, led by Bopage, was to capture of the city of Colombo. The capital was divided into five areas: Colombo South, Colombo North, Kandy Road, Colombo Central, and Kotte. The insurgents were to attack police stations along the way, obtaining arms and ammunition from them. The targets were
Welikada Prison,
Srawasthi,
Radio Ceylon and the homes of government officials, including Justice Minister
Felix Dias Bandaranaike, the
Army Commander and the
IGP. The fourth mission was to rescue Wijeweera from prison in Jaffna.
Wellawaya attack Planning for the countrywide insurrection was hasty and poorly coordinated, with some district leaders not informed until the morning of the uprising. At 5:20 am on 5 April, the
Wellawaya police station was attacked and two police constables were killed. The Wellawaya attack had preempted the initial wave of simultaneous attacks planned by the JVP, which lost the element of surprise. Following the attack, soon after dawn on 5 April,
Major General D. S. Attygalle,
Commander of the Ceylon Army ordered a platoon of the 1st Battalion,
Gemunu Watch from
Diyatalawa to Wellawaya. At 7:00 am,
Radio Ceylon reported the attack and warned of further attacks. Major
Gratian Silva, Army HQ
GSO 1 (Ops), and DIG
Rudra Rajasingham flew by an air force helicopter to Wellawaya that morning to inspect the ground situation in Wellawaya and reported to Attygalle and the
Inspector General of Police (IGP). The government began frantic preparations for further attacks. A curfew was declared in parts of the island, all police stations were warned of an impending attack, and Attygalle ordered the army to begin
mobilization. Several JVP cadres were arrested at
Viharamahadevi Park on 5 April as they prepared to abduct (or assassinate) Prime Minister Bandaranaike at her private residence at Rosemead Place. This was followed by a quick citywide curfew and more arrests in Kotahena and Borella, with large numbers of bombs, weapons, and medical equipment meant to be used in the planned attack on the city. At 8:00 pm, General Attygalle, IGP
Stanley Senanayake and Lieutenant Colonel Anuruddha Ratwatte arrived at the prime minister's residence and briefed her on the attack on Wellawaya and an impending attack that night. Soon afterwards, the prime minister left for
Temple Trees (her official residence) with General Attygalle, Captain A.R.P. (Kalu) Wijeratne, and her normal escort. Temple Trees became the centre of government operations (both civil and military) during the crisis, and its security was strengthened. It was a refuge for the ministers, most of whom were from leftist parties. Helicopter patrols around the capital began as rumours spread that the JVP was marching on Colombo.
First wave of attacks With a curfew imposed and suspects being arrested, some JVP leaders went into hiding. The attack began as planned. Ninety-two police stations across the country were attacked simultaneously by JVP groups armed with shotguns, bombs, and Molotov cocktails; five (in
Deniyaya,
Uragaha,
Rajangane,
Kataragama and
Warakapola) were overrun by the insurgents, and 43 were abandoned by the police for "strategic reasons" during the following days. Fifty-seven police stations were damaged. The insurgents cut telephone and power lines and blocked roads with trees. The Hanwella police station, near Colombo, was attacked on 6 April and overrun. It was soon recaptured by army reinforcements from the Panagoda Cantonment. The No. 2 Squadron of the Royal Ceylon Air Force deployed its three
Bell 206A JetRanger helicopters, which began flying missions to remote police stations to supply them with weapons and ammunition; over the following days, the helicopters returned wounded to hospitals.
RCyAF Ekala was also attacked. The police withdrew personnel from smaller police stations. The rebels had taken control of
Matara District and the town of
Ambalangoda in the
Galle District by 10 April, and came close to capturing the remainder of
Southern Province except for cities of
Galle and
Matara (both of which had two Dutch colonial forts and small army garrisons). However, none of the JVP's four major missions succeeded. The abduction of the prime minister failed, with arrests of JVP members in Colombo on 5 April. The Panagoda Cantonment and Colombo were never attacked, because the members did not assemble. Jaffna Prison was attacked on the night of 5 April to rescue Wijeweera. The cadre booked a bus to the prison, and Pyatilake led the attack. It failed, however, when police reinforcements arrived; many of the attackers were arrested, and some were killed. Attacks on the Jaffna police station and Karainagar naval detachment also failed, with four insurgents killed on 6 April at
Elephant Pass. Loku Athula, who was given leadership of the Kegalle District and Kurunegala District, moved into the area on 3 April and began organizing the area leaders. He coordinated operations with detachments in Veyangoda and Mirigama, with over 600 JVP carders deployed across the Kegalle District concentrated at Warakapola and Rambukkana. The Pindeniya detachment, led by Patrick Fernando attacked both the local Police Station and the Bogala Graphite Mines, capturing a lorry load of explosives from the mines. On 8 April, the Warakapola Police Station was attacked, weapons including two submachine guns seized and the building set alight. Police stations in Bulathkohupitiya, Aranayaka, Mawanella, Rambukkana and Dedigama were attacked and the one at Aranayake burned down. Only the police station in Kegalle town and its surrounding area remained under government control in the Kegalle District. In the North Central Province, only the Anuradhapura town and its police station held out, while the police station in Vavuniya and Polonnaruwa were attacked. Less intense activity was reported in the Kandy, Badulla and Moneragala Districts.
Government response Having lost the element of surprise and coordination, the JVP's first wave of attacks was executed as planned. Although on high alert, the government could do little to prepare and withstand the first wave. Weapons and ammunition were a key problem for both sides, with the JVP lacking access and aimed at gaining these from the police and military they would overrun in their first wave; while the government soon found out that its pre-insurrection stocks of small-arms ammunition was enough to hold out for only a week. On 5 April when the warning of the impending attack was issued, some police stations found that they lacked operational firearms or live ammunition. The three Bell 206A Jet Ranger helicopters of the RCyAF began on 5 April with a flurry of activity, they began flying weapons and ammunition to isolated police stations. Flying over 12 hours a day, these three helicopters airlifted 36,500 lb of ammunition during April. The Doves flew supply missions to different parts of the island moving 900 soldiers and 100,000 lb of equipment in April. The army reported its first
KIA on the first day of the insurrection when Staff Sergeant Jothipala was killed at Thulhiriya in the Kurunegala District. As the insurgents overran five police stations and forty-three were abandoned in the days that followed, the JVP gained control over large parts of the island uncontested. They would raise the red flag and assert their dominance over the population. The government forces responded by first securing Colombo, other cities and large towns with sizable police and military garrisons. Roadblocks were set up; bridges, ports and airports were secured, overstretching the armed forces, which began mobilizing its
reservists. Army, navy, and air-force personnel were initially deployed on ground duty in a defensive posture; in most areas, the police were able to hold out themselves. The government considered the situation dire during the insurrection's early days; its pre-insurrection stocks of small-arms ammunition were expected to run out in a week, and the shooting of
naval ratings by a fellow rating in Jaffna stoked fears of JVP infiltration of the armed forces. Therefore, the government adopted a strategy of holding out, until it received assistance from friendly nations. Former
Inspector General of Police (IGP)
S. A. Dissanayake was appointed Additional Permanent Secretary to the
Ministry of External Affairs and Defence, and coordinated the government's defense from the situation room at Temple Trees. Local military coordinating officers, appointed from the three branches of the armed forces for each affected district, were tasked with carrying out local
counter-insurgency operations. These were Colonel
E. T. De Z Abeysekera in Anuradhapura, Colonel
S. D. Ratwatte in Badulla, Colonel
Douglas Ramanayake in Galle, Colonel
Derrick Nugawela in Hambantota, Lieutenant Colonel R. R. Rodrigo in Jaffna, Lieutenant Colonel
Cyril Ranatunga in Kegalle, Lieutenant Colonel D. J. de S. Wickremasinghe in Matara, Lieutenant Colonel
Tissa Weeratunga in Moneragala and Lieutenant Colonel
Dennis Hapugalle in Vavuniya. These appointments changed rapidly as the ground situation changed. With many parts of the island under JVP control, communication and transport was limited. The JVP had blocked roads having fallen trees, damaged culverts and bridges preventing vehicular movements. Many army convoys were ambushed such as in Aranayake and in Anuradhapura, where Captain
Noel Weerakoon was killed. Initial government offensives were pushed back in areas such as
Matara, where local
member of parliament Sumanapala Dahanayake was wounded accompanying the first joint army and police expedition into rebel-held areas. == International involvement ==