The end of the armed conflict will be 'celebrated' by the government in a 'cultural presentation of victory' on May 18, according to the website of the defence ministry.
The event, titled 'A Reminiscence of Reconciliation', will include the army, navy, air force, civil security department and the police.
Held on the day Tamils across the world to mourn the tens of thousands of those who died, the 'celebration' will occur under the patronage of Prime Minister Ranil Wickremesinghe and President Maithripala Sirisena.
A government official said the president and the prime minister decided to conduct the event in this way this year in order to build "lasting peace through reconciliation, friendship and brotherhood among the people", defence.lk reported.