Wandilla was returned to her owners at the end of the war, then was sold to the Bermuda & West Indies SS Company and renamed Fort St. George in 1921.

After the start of World War I, Wandilla was one of several Adelaide Steamship Company vessels requisitioned for military service.

She collided with White Star Line's RMS Olympic in 1924 while in New York City, and was out of service for a period of time for repairs.

[3] The Arno was sunk by aerial torpedoes from the Royal Air Force on 10 September 1942 at 33°14′N 23°23′E / 33.233°N 23.383°E / 33.233; 23.383, about 40 miles (64 km) north-east of Ras el Tin, near Tobruk.

It has been alleged that a German radio message decoded on 31 August 1942 showed that the ship was being used to carry supplies to Benghazi in violation of the Hague Convention, making the sinking a justified attack.