In 1942, during World War II, he was arrested by the occupying Fascist Italian authorities and sent to the internment camp at Gonars, but the train transporting the prisoners was attacked by Partisans near Verd and the detainees freed and given the choice to join the Partisans or return home (those that chose to return home were separated from the rest and murdered at the Krim Cave Mass Grave).

[3] Jarc chose to join the Partisans and was killed by the Italian Army two months later in Pugled pri Starem Logu in Kočevski Rog.

As a young student, he joined the literary-artistic circle around the painter Božidar Jakac and poet Anton Podbevšek.

To the crisis of European civilization and the mechanization of man, he juxtaposed to an ecstatic and lyrical personal reflection.

One of his most important works is the autobiographical novel Novo mesto (1932), in which he described the intellectual and artistic turmoil in the small Lower Carniolan town in the first years after World War I.