Question: In what war did the Royal Navy include the Condottieri-class light cruiser Eugenio di Savoia?

Context paragraphs:
Italian cruiser Luigi Cadorna: Luigi Cadorna was an Italian Condottieri-class light cruiser, which served in the "Regia Marina" during World War II; named after Italian Field Marshal Luigi Cadorna who was commander in Chief of the Italian Army during World War I.

HMS Swiftsure (08): HMS "Swiftsure" was a "Minotaur"-class light cruiser of the Royal Navy.  She was laid down by Vickers Armstrong at Newcastle-on-Tyne on 22 September 1941, launched on 4 February 1943 by Lady Wake-Walker and commissioned on 22 June 1944.  The first of a new Minotaur class, a development of the later Colony class with extra beam and a fifth twin 4 inch turret.  "Swiftsure" was the last Royal Navy cruiser completed during World War Two and was the first British cruiser designed around the concept of an operations room and modern radar, with sensor screens and communications positioned for efficient operation.  In 1945 in the Pacific, she proved the most efficient anti-aircraft cruiser in the fleet and was the first Royal Navy cruiser with the 274 lock-and-follow radar targeting for her main armament

HMS Black Prince (81): HMS "Black Prince was a "Dido"-class light cruiser of the Royal Navy, of the "Bellona" subgroup.  The cruiser was commissioned in 1943, and served during World War II on the Arctic convoys, during the Normandy landings, and as part of the British Pacific Fleet.  In 1946, the cruiser was loaned to the Royal New Zealand Navy, becoming HMNZS "Black Prince.  The cruiser was docked for modernisation in 1947, but in April, her sailors walked off the ship as part of a series of mutinies in the RNZN.  The shortage of manpower resulting from these mutinies meant that the modernisation had to be cancelled, and "Black Prince" was placed in reserve until 1953.  She returned to service after refitting with simplified secondary armament with a single quad pom pom in Q position and 8 x 1 Mk3 40mm electric Bofors guns.  The ship was decommissioned again two years later, and returned to the Royal Navy in 1961.  "Black Prince" did not re-enter service, and was towed from Auckland to the Osaka breakage yards for scrapping in 1962.

HMS Falmouth (1910): HMS "Falmouth" was a Town-class light cruiser built for the Royal Navy during the 1910s.  She was one of four ships of the "Weymouth" sub-class.  The ship was initially assigned to the Atlantic Fleet upon completion in 1911, but was reduced to reserve in mid-1913.  When the First World War began in 1914, "Falmouth" was transferred to the 1st Light Cruiser Squadron (LCS) of the Grand Fleet and then the 3rd Light Cruiser Squadron at the end of the year.  The ship participated in most of the early fleet actions, including the Battles of Heligoland Bight, Dogger Bank, and Jutland, but was only seriously engaged in the latter.  She was torpedoed and sunk off Flamborough Head, Yorkshire by German submarines during the Action of 19 August 1916.

Italian cruiser Eugenio di Savoia: Eugenio di Savoia was a Condottieri-class light cruiser, which served in the "Regia Marina" during World War II.  She survived the war but was given as a war reparation to the Hellenic Navy in 1947.  She was renamed Elli and served until 1964.

Regia Marina: The Royal Navy (Italian: Regia Marina, ] ) was the navy of the Kingdom of Italy ("Regno d'Italia") from 1861 to 1946.  In 1946, with the birth of the Italian Republic ("Repubblica Italiana"), the Royal Navy changed its name to Military Navy ("Marina Militare").

Italian cruiser Muzio Attendolo: Muzio Attendolo was a Condottieri-class light cruiser of the Italian Regia Marina, which fought in World War II.  She was sunk in Naples by bombers of the United States Army Air Forces (USAAF) on 4 December 1942.  Although salvaged after the war she was damaged beyond repair and was scrapped.

Umberto I of Italy: Umberto I (Italian: "Umberto Ranieri Carlo Emanuele Giovanni Maria Ferdinando Eugenio di Savoia" ; 14 March 1844 – 29 July 1900), nicknamed "the Good" (Italian: "il Buono"), was the King of Italy from 9 January 1878 until his assassination on 29 July 1900.

1st Cavalry Division Eugenio di Savoia: The 1st Cavalry Division "Eugenio di Savoia" was an cavalry division of the Royal Italian Army during World War II.  The "Eugenio di Savoia" was mobilized in 1940, as a cavalry division and took part in the Invasion of Yugoslavia.  The division remained in Yugoslavia in the XI Corps (Ljubljana) as an occupying force on the coast of Dalmatia.

Italian cruiser Duca degli Abruzzi: Luigi di Savoia Duca Degli Abruzzi was an Italian "Duca degli Abruzzi"-class light cruiser, which served in the Regia Marina during World War II.  After the war, she was retained by the Marina Militare and decommissioned in 1961.  She was built by OTO at La Spezia and named after Luigi Amedeo, Duke of the Abruzzi, an Italian explorer and Admiral of World War I.

Supporting paragraphs: Italian cruiser Eugenio di Savoia Regia Marina
Answer: World War II