Prior to the First Balkan War of 1912, he worked as an illustrations editor at the European edition of the American New York Herald, based in Paris.He took a leave of absence from his job in order to return to Serbia and document the First Balkan War.During World War I, he recorded battles of Cer, Kolubara, and others, followed by the great retreat of the Serbian army through Albania. In 1915, the Supreme Command sent him to France, where he published battlefield footage.