Norwegian Campaign in the context of "HMS Renown (1916)"

Operation Weserübung (German: Unternehmen Weserübung [ˈveːzɐˌʔyːbʊŋ], transl. Operation Weser Exercise, 9 April – 10 June 1940) was the invasion of Denmark and Norway by Nazi Germany during World War II. It was the opening operation of the Norwegian Campaign.

In the early morning of 9 April 1940 (Wesertag, "Weser Day"), German forces occupied Denmark and invaded Norway, ostensibly as a preventive manoeuvre against a planned Anglo-French occupation of Norway known as Plan R 4, which developed as a response to a German invasion of Norwegian territory. After the rapid occupation of Denmark, in which the Danish military was ordered to stand down as Denmark's government did not declare war with Germany, German envoys informed the governments of Denmark and Norway that Germany's forces had come to protect both countries against Anglo-French attacks. Significant differences in geography, location and climate between the two nations made the actual military operations very dissimilar.

The occupation of Norway by Nazi Germany during the Second World War began on 9 April 1940 after Operation Weserübung. Conventional armed resistance to the German invasion ended on 10 June 1940, and Nazi Germany controlled Norway until the capitulation of German forces in Europe on 8 May 1945. Throughout this period, a pro-German government named Den nasjonale regjering ('the National Government') ruled Norway, while the Norwegian king Haakon VII and the prewar government escaped to London, where they formed a government in exile. Civil rule was effectively assumed by the Reichskommissariat Norwegen (Reich Commissariat of Norway), which acted in collaboration with the pro-German puppet government. This period of military occupation is, in Norway, referred to as the "war years", "occupation period" or simply "the war".

HMS Greyhound was a G-class destroyer built for the Royal Navy in the 1930s. Greyhound participated in the Norwegian Campaign in April 1940, the Dunkirk evacuation in May and the Battle of Dakar in September before being transferred to the Mediterranean Fleet in November. The ship generally escorted the larger ships of the Mediterranean Fleet as they protected convoys against attacks from the Italian Fleet. She sank two Italian submarines while escorting convoys herself in early 1941. Greyhound was sunk by German Junkers Ju 87 Stuka dive bombers north-west of Crete on 22 May 1941 as she escorted the battleships of the Mediterranean Fleet attempting to intercept the German sea-borne invasion forces destined for Crete.

HMS Sheffield was the third of ten Town-class light cruisers of the Royal Navy. The ship was laid down in January 1935, launched in July 1936, and commissioned in August 1937. She was active in all major naval European theatres of the Second World War, in the Atlantic Ocean, the Mediterranean Sea and the Arctic Ocean.

Her career started with service in the Home Fleet, which took her on patrols against German blockade runners and on actions during the Norwegian Campaign. In August 1940, Sheffield was transferred to Force H stationed in Gibraltar. During her service with Force H, most of the operations involved either ferrying aircraft or escorting convoys to Malta. Sheffield also operated against German surface raiders in the Atlantic, and took part in the chase for the German battleship Bismarck. On 26 May 1941, she directed torpedo bombers from the aircraft carrier Ark Royal to Bismarck, but took no part in the sinking of Bismarck one day later.

HMS Warspite was one of five Queen Elizabeth-class battleships built for the Royal Navy during the early 1910s. Completed during the First World War in 1915, she was assigned to the Grand Fleet and participated in the Battle of Jutland. Other than that battle, and the inconclusive Action of 19 August, her service during the war generally consisted of routine patrols and training in the North Sea. During the interwar period the ship was deployed in the Atlantic Ocean and the Mediterranean Sea, often serving as flagship, and was thoroughly modernised in the mid-1930s.

During the Second World War, Warspite was involved in the Norwegian Campaign in early 1940 and was transferred to the Mediterranean later that year where the ship participated in fleet actions against the Royal Italian Navy (Regia Marina) while also escorting convoys and bombarding Italian troops ashore. She was damaged by German aircraft during the Battle of Crete in mid-1941 and required six months of repairs in the United States. They were completed after the start of the Pacific War in December and the ship sailed across the Pacific to join the Eastern Fleet in the Indian Ocean in early 1942. Warspite returned home in mid-1943 to conduct naval gunfire support as part of Force H during the Italian campaign. She was badly damaged by German radio-controlled glider bombs during the landings at Salerno and spent most of the next year under repair. The ship bombarded German positions during the Normandy landings and on Walcheren Island in 1944, despite not being fully repaired. These actions earned her the most battle honours ever awarded to an individual ship in the Royal Navy. For this and other reasons, Warspite gained the nickname the "Grand Old Lady" after a comment made by Admiral Sir Andrew Cunningham in 1943 while she was his flagship.

The G- and H-class destroyers were a group of 18 destroyers built for the Royal Navy during the 1930s. Six additional ships being built for the Brazilian Navy when World War II began in 1939 were purchased by the British and named the Havant class. The design was a major export success with other ships built for the Argentine and Royal Hellenic Navies. They were assigned to the Mediterranean Fleet upon completion and enforced the Non-Intervention Agreement during the Spanish Civil War of 1936–1939.

Most ships were recalled home or were sent to the North Atlantic from October to November 1939, after it became clear that Fascist Italy was not going to intervene in World War II. Then they began to escort convoys and patrol for German submarines and commerce raiders. Two ships were lost to German mines in the first six months of the war. Three more were lost during the Norwegian Campaign, one in combat with a German cruiser and two during the First Battle of Narvik in April 1940. The Battle of France was the next test for the destroyers from May to June, with many of the Gs and Havants participating in the evacuation of Dunkirk and the subsequent evacuations of Allied troops from western France. Three ships were sunk, two by bombs and the other by torpedoes. Most of the H-class ships were sent to the Mediterranean in May in case Mussolini decided to attack France and the majority of the surviving Gs were sent to Force H at Gibraltar in July. Two of them, Griffin and Greyhound, participated in the Battle of Dakar, before being assigned to the Mediterranean Fleet with their sister ships. By the end of the year, the ships participated in several battles with the Royal Italian Navy, losing two to Italian mines and torpedoes, while sinking two Italian submarines. The Havants spent most of the war in the North Atlantic on convoy escort duties, losing half their number to German submarines, while helping to sink six in exchange by the end of the war.

HMS Nelson (pennant number: 28) was the name ship of her class of two battleships built for the Royal Navy in the 1920s. They were the first battleships built to meet the limitations of the Washington Naval Treaty of 1922. Entering service in 1927, the ship spent her peacetime career with the Atlantic and Home Fleets, usually as the fleet flagship. During the early stages of World War II, she searched for German commerce raiders, missed participating in the Norwegian Campaign after she was badly damaged by a mine in late 1939, and escorted convoys in the Atlantic Ocean.

In mid-1941 Nelson escorted several convoys to Malta before being torpedoed in September. After repairs she resumed doing so before supporting the British invasion of French Algeria during Operation Torch in late 1942. The ship covered the invasions of Sicily (Operation Husky) and Italy (Operation Avalanche) in mid-1943 while bombarding coastal defences during Operation Baytown. During the Normandy landings in June 1944, Nelson provided naval gunfire support before she struck a mine and spent the rest of the year under repair. The ship was transferred to the Eastern Fleet in mid-1945 and returned home a few months after the Japanese surrender in September to serve as the flagship of the Home Fleet. She became a training ship in early 1946 and was reduced to reserve in late 1947. Nelson was scrapped two years later after being used as a target for bomb tests.

Operation Wilfred was a British and French naval operation during the Second World War that involved the mining of the channels between Norway and its offshore islands to prevent the transport of Swedish iron ore through neutral Norwegian waters. The Allies assumed that Wilfred would provoke German retaliation in Norway and prepared Plan R4 to occupy Narvik, Stavanger, Bergen and Trondheim. On 8 April 1940, the operation was partly carried out but was overtaken by events, when the Germans began Operation Weserübung on 9 April, the invasion of Norway and Denmark, which began the Norwegian Campaign.

62°33′48.45″N 7°40′59.59″E / 62.5634583°N 7.6832194°E / 62.5634583; 7.6832194

The Åndalsnes landings were a British military operation in 1940, during the Norwegian Campaign of World War II. Following the German invasion of Norway in April 1940, a British Army expeditionary force was landed at Åndalsnes, in Romsdal, to support Norwegian Army units defending the city of Trondheim. British forces were also landed at Namsos, north of Åndalsnes, in a complementary pincer movement. The British landings were unsuccessful and the Allies suffered a significant defeat at Åndalsnes.