Italian auxiliary cruiser Ramb II significant presence of Royal Navy in the Red Sea. With the start of Operation Compass in North Africa and the defeat of the Italian troops at Sidi Barrani on 9-12 December 1940, it became clear that it would be impossible for Italian troops in Libya to reach Italian East Africa to break its isolation. The fuel supplies were dwindling and were projected to be exhausted by June 1941. In anticipation of the inevitable fall of the colony, a plan was developed to send as many ships as possible to Japan or occupied France and to destroy all other ships that
Italian East Africa (Citao)" (Mechanic & Transport industry). Italians even created new airports and in 1936 started the worldwide famous "Linea dell'Impero", a flight connecting Addis Abeba to Rome. The line was opened after the Italian conquest of Ethiopia and was followed by the first air links with the Italian colonies in Africa Orientale Italiana (Italian East Africa), which began in a pioneering way since 1934. The route was enlarged to 6,379 km and initially joined Rome with Addis Ababa via Syracuse, Benghazi, Cairo, Wadi Halfa, Khartoum, Kassala, Asmara, Dire Dawa. There was a change of aircraft in Benghazi (or sometimes in Tripoli).