After a "long and tiresome" administrative trip through Northern Dobruja, which he considered retelling as a novel, Munteanu began collecting his poetry into one "tiny volume", the 1909 "Aripi negre" ("Black Wings"). While he remained close to Dragomirescu, for whom he maintained "an unbound intellectual sympathy", Munteanu eventually moved on. From 1911 to 1916, he was a contributor to "Flacăra". His activity was interrupted by World War I and the battles on the Romanian front. In 1916–1917, he was in Bârlad as a military prosecutor, visiting with Alexandru Vlahuță and joining the literary club known as "Academia Bârlădeană", also frequented by George Tutoveanu, Victor Ion Popa, and Vasile Voiculescu. He had begun writing religious-themed poems such as "Golgota", which Vlahuță reportedly asked him to recite at every "Academia" meeting, and more specifically his first sonnets. Munteanu had also served as a magistrate at Piatra Neamț, Iași, Bazargic, Câmpulung, Brăila, and, during the interwar, performed similar tasks in Sibiu, Odorhei, Deva and ultimately Chișinău. In July 1919, he was royal prosecutor at the trial of Hungarian academic István Apáthy, accused of "conspiracy against Romanian citizens" during the war over Transylvania.