Operation Vigorous
On 25 March 1942 he moved aboard ship to take command of the 9th Naval Division, which consisted of the s. The first combat action in which he participated was the contrast to British "Operation Vigorous", which goal was to take a supply convoy from Alexandria, Egypt to Malta. This action took place in the wider naval clashed known as the Battle of Mid-June or "Operation Harpoon" and Fioravanzo participated on orders from Admiral Angelo Iachino, the higher commander at sea. The action of the 9th Division, together with that of the 3rd and 8th Division, forced the British to abandon the mission with no ballistic contact between the two sides.