The national holiday, World War I Armistice Day, is celebrated on 11 November in Serbia.

The flower Natalie’s ramonda (named after Queen Natalija Obrenović), the so-called "phoenix plant", was taken as the symbol of this, in memory of the suffering that Serbia endured, and then re-established itself as a state. The symbolism lies in the fact that this plant, like the Serbian army, after all the suffering and losses it endured, came out of the war as a winner.

Natalie’s ramonda belongs to an endangered and rare species that grows only in the area of the Central Balkans, in Serbia, North Macedonia and northern Greece. It is a plant that has the amazing ability to resurrect itself after being completely dried up. It belongs to an ancient fossil species, which withdrew to the hidden parts of the Balkans after the Ice Age.

The Armistice Day symbol is an emblem worn on the lapel in the week leading up to Armistice Day. The emblem consists of two green ribbons that resemble the ribbon of the famous Albanian commemorative medal and one purple flower with five petals.

Since 2005, the first classes in schools have been dedicated to the memory of that day in Serbia, and World War I Armistice Day has been celebrated as a national holiday since 2012.