He was indicted in the Banja Luka process (November 3, 1915 - April 22, 1916), along with other Serbs from Austria-Hungary accused of high treason. Ćorović was first sentenced to five years, but the High court increased it to eight years because of his contribution to the Serb cultural progress through "Prosvjeta". The new Austro-Hungarian Emperor, Charles I of Austria, after international pressure by the Spanish king, released political prisoners in 1917 and granting them amnesty. At the end of World War I, Ćorović moved to Zagreb, jubilant with its Croat-Serb coalition in power and the National Council of Slovenes, Croats and Serbs in favour of unification with Serbia. With several Yugoslavist poets and writers (Ivo Andrić and Niko Bartulović among others) Ćorović had established the "Književni Jug", a literary review. In parallel, Ćorović worked closely with other Yugoslav politicians from different provinces within the Austro-Hungarian territories. Čorović was present at the solemn proclamation of the formation of Kingdom of Serbs, Croats and Slovenes in Belgrade on December 1, 1918. Dissatisfied by the treatment of the Serbian victims after the war, Ćorović wrote the "Black Book" (Beograd-Sarajevo, 1920), about the large-scale persecution and murders of Serbs in Bosnia and Herzegovina. Vladimir Ćorović was a Europe-wide renowned scholar. Ćorović was professor of Serbian history at the University of Belgrade since 1919, and Rector of the Belgrade University in the 1934–35 and 1935–36 academic years. Ćorović published over 1,000 works. He rarely touched upon Byzantine themes, but the Byzantine component in his professional education was very significant for the very important support for the personnel changes which, in the 1930s, brought about the advancement of Byzantine studies at the University of Belgrade. His scholarly works includes critical interpretations of Byzantine and Serbian medieval documents, studies regarding medieval historiography and various monographs devoted to the Serbian monasteries of Bosnia (Tvrdoš, Duži, Zavala) to the relations between the Serbs of Montenegro and Muslims in Albania. "Mount Athos and Hilandar" ("Sveta Gora i Hilandar") was published by the Hilandar monastic brotherhood in 1985.