 Sârbu was also responsible for spreading anti-war propaganda leaflets in the factories of Constanţa.According to Vartan Arachelian and Corneliu Coposu, Sârbu was part of a group who set fire to a German military depot in Constanţa, and signaled Soviet warplanes at night.On June 22, 1941 (the day Operation Barbarossa was launched), Sârbu was arrested along four other anti-fascist militants by Romania's secret police during a clandestine meeting on the "Pescărie" beach, in Mamaia.