World War I marked the end of dynamic development for Podgorica, which by then was the largest city in the newly proclaimed Kingdom of Montenegro. On 10 August 1914, nine military personnel and 13 civilians were killed in Podgorica from an aerial bombardment by Austro-Hungarian Aviation Troops. The city was bombed three more times in 1915. Podgorica was occupied, as was the rest of the country, by Austria-Hungary from 1916 to 1918.