The Cattaro mutiny occurred during World War I. Sailors of the Austro-Hungarian Navy in the Adriatic Bay of Cattaro (today: Kotor, Montenegro), which at that time belonged to Austria-Hungary, started it on 1 February 1918. The mutiny remained isolated and had to be abandoned after three days due to the arrival of loyal troops. Four sailors were subsequently executed according to naval law. The naval historian Halpern portrays this event as the last victory of the Austro-Hungarian Monarchy over the social forces that would eventually overwhelm it.[1]