The armored boat "Jadar" of Serbian inland waterway fleet was officially launched into the river Sava in Čukarica. The celebration was attended by VII Infantry Regiment commander, Col. Milisav Lešjanin, XI Infantry Regiment commander, Lt. Col. Milijan Nedeljković and a number of officers and citizens. Тhе engine for the boat was taken from one car, while the dome with ball bearing was removed from the Austro-Hungarian sunken patrol boat.
In September of that year, there was a large German-Austro-Hungarian attack on Belgrade, when over 30.000 grenades was fired. After fierce street fighting and many killed, the Germans and Austro-Hungarians took over control of the city.