Operation Avalanche in the context of "HMS Nelson (28)"

The Allied invasion of Italy was the Allied amphibious landing on mainland Italy that took place from 3 September 1943, during the Italian campaign of World War II. The operation was undertaken by General Sir Harold Alexander's 15th Army Group (comprising General Mark W. Clark's American Fifth Army and General Bernard Montgomery's British Eighth Army) and followed the successful Allied invasion of Sicily. A preliminary landing in Calabria (Operation Baytown) took place on 3 September, the main invasion force landed on the west coast of Italy at Salerno on 9 September as part of Operation Avalanche at the same time as a supporting operation at Taranto (Operation Slapstick).

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.