Regia Marina in the context of "1946 Italian institutional referendum"

The Battle of the Atlantic, the longest continuous military campaign in World War II, ran from 1939 to the defeat of Nazi Germany in 1945, covering a major part of the naval history of World War II. At its core was the Allied naval blockade of Germany, announced the day after the declaration of war, and Germany's subsequent counterblockade. The campaign peaked from mid-1940 to the end of 1943.

The Battle of the Atlantic pitted U-boats and other warships of the German Kriegsmarine (navy) and aircraft of the Luftwaffe (air force) against the Royal Navy, Royal Canadian Navy, United States Navy, and Allied merchant shipping. Convoys, coming mainly from North America and predominantly going to the United Kingdom and the Soviet Union, were protected for the most part by the British and Canadian navies and air forces. These forces were aided by ships and aircraft of the United States beginning on 13 September 1941. The Germans were joined by submarines of the Italian Regia Marina (royal navy) after Germany's Axis ally Italy entered the war on 10 June 1940.

The Italian Navy (Italian: Marina Militare, lit. 'Military Navy'; abbreviated as MM) is one of the four branches of Italian Armed Forces and was formed in 1946 from what remained of the Regia Marina (Royal Navy) after World War II. As of August 2014, the Italian Navy had a strength of 30,923 active personnel, with approximately 198 vessels in service, including minor auxiliary vessels. It is considered a multiregional and a blue-water navy.

Marshal of Italy (Italian: Maresciallo d'Italia) was a rank in the Royal Italian Army (Regio Esercito). Originally created in 1924 by Italian dictator Benito Mussolini for the purpose of honoring generals Luigi Cadorna and Armando Diaz, the rank was granted to several other general officers from 1926 to 1943. The rank was the highest in the Italian Army prior to the creation of the rank of First Marshal of the Empire in 1938. The rank of Marshal of Italy was abolished in 1946 with the creation of the Italian Republic. The equivalent Royal Navy (Regia Marina) rank was Grand admiral (Grande Ammiraglio), while the equivalent Air Force (Regia Aeronautica) rank was Marshal of the Air (Maresciallo dell'Aria).

The rank was formally abolished on 18 January 1947 by the Provisional Head of State Enrico de Nicola.

The East African campaign (also known as the Abyssinian campaign) was fought in East Africa during the Second World War by Allies of World War II, mainly from the British Empire, against Italy and its colony of Italian East Africa, between June 1940 and November 1941. The British Middle East Command with troops from the United Kingdom, South Africa, British India, Uganda Protectorate, Kenya, Somaliland, West Africa, Northern and Southern Rhodesia, Sudan and Nyasaland participated in the campaign. These were joined by the Allied Force Publique of Belgian Congo, Imperial Ethiopian Arbegnoch (resistance forces) and a small unit of Free French Forces.

Italian East Africa was defended by the Comando Forze Armate dell'Africa Orientale Italiana (Italian East African Armed Forces Command), with units from the Regio Esercito (Royal Army), Regia Aeronautica (Royal Air Force) and Regia Marina (Royal Navy). The Italian forces included about 250,000 soldiers of the Regio Corpo Truppe Coloniali (Royal Corps of Colonial Troops), led by Italian officers and NCOs. With Britain in control of the Suez Canal, the Italian forces were cut off from supplies and reinforcement once hostilities began.

The Malta convoys were Allied supply convoys of the Second World War. The convoys took place during the Siege of Malta in the Mediterranean Theatre. Malta was a base from which British sea and air forces could attack ships carrying supplies from Europe to Italian Libya. Britain fought the Western Desert Campaign against Axis armies in North Africa to keep the Suez Canal and to control Middle Eastern oil. The strategic value of Malta was so great the British risked many merchant vessels and warships to supply the island and the Axis made determined efforts to neutralise the island as an offensive base.

The civilian population and the garrison required imports of food, medical supplies, fuel and equipment; the military forces on the island needed reinforcements, ammunition and spare parts. British convoys were escorted to Malta by ships of the Mediterranean Fleet, Force H and aircraft of the Fleet Air Arm and Royal Air Force, during the Battle of the Mediterranean (1940–1943). British and Allied ships were attacked by the Italian Regia Aeronautica (Royal Air Force) and Regia Marina (Royal Navy) in 1940 and from 1941, by the Luftwaffe (German Air Force) and Kriegsmarine (German Navy).

The Battle of Calabria (Battaglia di Punta Stilo) on 9 July 1940, was a naval battle during the Battle of the Mediterranean in the Second World War between ships of the Regia Marina and those of the Mediterranean Fleet. The battle took place 30 nmi (56 km; 35 mi) to the east of Punta Stilo, Calabria.

Both fleets went to sea to protect convoys that reached their destinations and both had signals intelligence giving them notice of their opponent's intentions and both had air support, the Italians from land-based aircraft and the British from the aircraft carrier HMS Eagle.

The Battle of Cape Matapan (Greek: Ναυμαχία του Ταινάρου) was a naval battle during the Second World War between the Allies, represented by the navies of the United Kingdom and Australia, and the Royal Italian Navy, from 27 to 29 March 1941. Cape Matapan is on the south-western coast of the Peloponnesian peninsula of Greece.

After the interception and decryption of Italian signals by the Government Code and Cypher School (GC&CS) at Bletchley Park (the decrypted intelligence codenamed Ultra), ships of the Royal Navy and Royal Australian Navy, under the command of Admiral Sir Andrew Cunningham, intercepted and sank or severely damaged several ships of the Italian Regia Marina under Squadron-Vice-Admiral Angelo Iachino. The opening actions of the battle are also known in Italy as the Battle of Gaudo.

The Fairey Swordfish is a retired biplane torpedo bomber, designed by the Fairey Aviation Company. Originating in the early 1930s, the Swordfish, nicknamed "Stringbag", was principally operated by the Fleet Air Arm of the Royal Navy. It was also used by the Royal Air Force (RAF), as well as several overseas operators, including the Royal Canadian Air Force (RCAF) and the Royal Netherlands Navy. It was initially operated primarily as a fleet attack aircraft. During its later years, the Swordfish was increasingly used for anti-submarine and training duties. The type was in frontline service throughout the Second World War.

Despite being obsolescent, the Swordfish achieved some spectacular successes during the war, including sinking one battleship and damaging two others belonging to the Regia Marina (the Italian navy) during the Battle of Taranto, and the famous attack on the German battleship Bismarck, which contributed to her eventually being sunk. Swordfishes sank a greater tonnage of Axis shipping than any other Allied aircraft during the war. The Swordfish remained in front-line service until V-E Day, having outlasted some of the aircraft intended to replace it.

The Battle of Taranto took place on the night of 11/12 November 1940 during the Second World War between British naval forces (Admiral Andrew Cunningham) and Italian naval forces (Admiral Inigo Campioni). The Royal Navy launched the first all-aircraft ship-to-ship naval attack in history, employing 21 Fairey Swordfish biplane torpedo bombers from the aircraft carrier HMS Illustrious in the Mediterranean Sea.

The attack struck the battle fleet of the Regia Marina at anchor in the harbour of Taranto, using aerial torpedoes, despite the shallowness of the water. The success of this attack augured the ascendancy of naval aviation over big-gun battleships. According to Cunningham, "Taranto, and the night of 11/12 November 1940, should be remembered forever as having shown once and for all that in the Fleet Air Arm the Navy has its most devastating weapon".