Slovenia observes the Day of Uprising Against Occupation on 27 April, a holiday honouring the resistance against Nazi and Fascist occupation during the Second World War.

The WWII resistance was spearheaded by the Liberation Front, an organisation founded in Ljubljana on 26 April 1941, 20 days after the then Kingdom of Yugoslavia was attacked by the Axis Powers.

However, for about two decades after the war it was believed that the meeting at which the Liberation Front was established took place on 27 April and what was celebrated as the Day of the Liberation Front before Slovenia's breaking away from the former Yugoslavia, was observed a day after the actual founding date.

When Slovenia gained independence in 1991, the holiday was renamed the Day of Uprising Against Occupation, but the date remained unchanged.

After the attack on 6 April, led by the Nazi Germany, Slovenian territory was divided between Germany, Italy and Hungary, while five villages near Brežice were occupied by the self-declared Fascist Independent State of Croatia.

The Kingdom of Yugoslavia surrendered, but Slovenians decided to fight back. Nearly three weeks after the attack, representatives of the Slovenian Communist Party, the Christian Socialists, the Sokol physical education movement and cultural workers founded what they called the Anti-Imperialist Front, which was later renamed the Liberation Front.

The founding meeting took place at the Vidmar Villa in the Rožna Dolina borough in Ljubljana, hosted by the author and politician Josip Vidmar (1895-1992). Today the villa serves as the residence of the German ambassador to Slovenia.

The role of the Liberation Front began to be questioned after Slovenia became independent in 1991, due to summary killings committed by the Communists immediately in the aftermath of WWII.

Many communities around the country will honour the resistance movement with a series of events, from ceremonies, to hikes and commemoration events.

Like every year, the main ceremony was held on the eve of the holiday, this time hosted by the town of Črnomelj in the south, with National Council President Marko Lotrič delivering the keynote address.