The purpose of the day is mourning victims of Boko Haram insurgents, the victory recorded by the Nigerian Military and the remembrance of fallen soldiers and volunteers who have sacrificed their lives fighting Boko Haram since 2009 in different parts of Borno State.

Boko Haram, an ISIS-aligned jihadist group, has killed over 30,000 people and displaced 2.3 million from their homes. At one time it was the world’s deadliest terror group according to the Global Terrorism Index.

In mid-2014, the militants gained control of swathes of territory in their home state of Borno.

In December 2016, Nigeria’s President Muhammadu Buhari announced that the army had seized one of Boko Haram’s last bases in northeastern Borno state, marking a key stage in the offensive against the armed group.

A long campaign in the 1,300sq km forest in Borno led to the “final crushing of Boko Haram terrorists in their last enclave in Sambisa Forest” on Friday, Buhari said in a statement at the time.

Governor of Borno, Kashim Shettima, said: “Based on Buhari’s announcement, the Sambisa forest became deceased or dead at about 1.35 pm on December 22nd 2016.”

As a result, Shettima announced that: “This day will be marked as Public Holiday in Borno for the purpose of celebrating the strength and the victory of our Armed Forces”.