Norwegian campaign

The Admiralty ordered that the troops, but not their equipment, be unloaded from the cruisers on the evening of the 8th, and that the cruisers were to search forthwith for the German ships known to be at sea. This was later cancelled and the squadron was ordered to rendezvous with the main body of the Home Fleet. Later that day, German bombers attacked the British ships and Devonshire suffered a near-miss. On the 11th, the squadron was detached on an unsuccessful search for German ships in the area around Trondheim and rejoined the fleet two days later.^[13] Cunningham's ships were then detached to Tromsø where he conducted negotiations with local officials to refuel there and to bring Norwegian troops west from Kirkenes. The squadron arrived there on the afternoon of the 15th and escorted Norwegian troopships back to Tromsø. Devonshire covered the evacuation of British and French troops from Namsos at the beginning of May and was nearly hit when the evacuation forces were attacked by German aircraft as they were withdrawing on 3 May.^[14]

Devonshire evacuated King Haakon VII, Crown Prince Olav, and Norwegian government officials, including the Prime Minister, Johan Nygaardsvold, from Tromsø on 7 June. On board were 461 passengers. The ship passed within 50 miles (80 km) of the action in which the aircraft carrier Glorious and two destroyers were sunk by Scharnhorst and Gneisenau. Although an enemy sighting report had been received in Devonshire, Cunningham's orders were to get Haakon VII to safety, and the cruiser sped up and continued on her course.^[15]

Operation Menace

In preparation for Operation Menace, a British naval attack on Dakar, Senegal, prior to a planned landing by the Free French, the ship was detached from the Home Fleet on 28 August and was assigned to Force M, the Royal Navy component of the operation. Still Cunningham's flagship, she departed the Clyde on the 31st, escorting the troop convoy en route to Gibraltar^[16] where they arrived on 3 September. On the 14th, Cunningham dispatched the 1st CS, augmented by the aircraft carrier Ark Royal, in an unsuccessful attempt to locate and turn back a Vichy French cruiser squadron bound for Dakar; by this time he had hoisted his flag in the battleship Barham. Devonshire and her Australian sister ship Australia engaged the French cruisers and destroyers as they manoeuvred in the harbour on the second day of the battle, with negligible effect in poor visibility. After Barham was lightly damaged during the action, Cunningham transferred back to Devonshire for the next day's battle during which the ship fired 200 shells from her main guns without scoring a single hit against French ships obscured by smoke screens.^[17]

After the attack was abandoned, she was employed to escort a British troop convoy to Douala, French Cameroons, in early October and then blockaded the coast of Gabon when Free French forces invaded in early November.^[18] On 7 November, her Supermarine Walrus seaplane helped to sink the Vichy submarine Poncelet off Gabon.^[19]

1941

Devonshire remained in the South Atlantic and participated in the unsuccessful hunt for the German commerce raider Kormoran in January 1941.^[20] The ship subsequently transferred to the Home Fleet and was refitted in Liverpool 19 February–22 May. During this refit her single 2-pounder guns were replaced by two octuple mounts and an early-warning Type 281 radar.^[21] She escorted British carriers when they raided Kirkenes and Petsamo in Norway and Finland in late July. The following month, Devonshire provided distant cover for the first convoy to Russia, Operation Dervish,^[22] before she was transferred to the Eastern Fleet.^[23] Before her departure, the ship received a pair of 20-millimeter (0.8 in) Oerlikon light AA guns in September.^[21] On 2 November, the ship led a force that captured a Vichy convoy bound for French Indochina off South Africa. Twenty days later, Devonshire sank a German commerce raider, the auxiliary cruiser Atlantis, north of Ascension Island.^[23]

1942–1943

The ship was subsequently refitted in Norfolk, Virginia from 24 January to 7 March 1942, where she received a Type 273 gunnery radar and six more Oerlikons.^[21] After the completion of her refit, Devonshire was sent to join the 4th Cruiser Squadron of the Eastern Fleet and escorted a convoy from Charleston, South Carolina, to Freetown, Sierra Leone en route.^[24] On 25 April, the ship escorted a convoy from Durban, South Africa to Madagascar as part of Operation Ironclad, which was launched to preempt a possible Japanese occupation of the island. The Vichy French had allowed Japanese forces to use air bases in French Indochina to launch the airstrikes that sank the capital ships Repulse and Prince of Wales, so it was quite possible they would permit the Japanese access to military facilities on Madagascar had they requested them.^[25] During late 1942, Devonshire's single four-inch AA guns were replaced with twin-gun mounts for Mark XVI guns of the same calibre. The ship remained in the Far East until May 1943, covering troop convoys from Suez to Australia.^[23] By this time, her quadruple .50-calibre machineguns and six single-Oerlikon mounts had been replaced by another pair of octuple two-pounder mounts and a dozen twin-Oerlikon mounts. She returned home that month and began a lengthy refit that lasted until 20 March 1944. During this refit, 'X' turret and one twin Oerlikon mount were replaced by two additional octuple two-pounder mounts and eight single-Oerlikon mounts. Her radar suite was modernized with Type 281B replacing Type 281 and the full range of anti-aircraft gunnery radars were installed. To accommodate all the new equipment, her catapult was removed.^[21]

1944–1945

She returned to duty with the Home Fleet at Scapa Flow in April 1944. From July until the end of hostilities in May 1945, Devonshire escorted the carrier raids that were mounted on shipping and other targets in Norwegian waters (Operations Mascot, Goodwood, and Hardy).^[23][26]

With the end of the war in Europe, Devonshire, now the flagship of Rear-Admiral James Ritchie, the future Flag Officer Norway, sailed on 12 May to Oslo. She then went to Copenhagen the next day, and from there she escorted the German cruisers Prinz Eugen and Nürnberg to Wilhelmshaven on 24–26 May.^[27] In June, Devonshire was again the flagship of the 1st Cruiser Squadron, under the command of Vice-Admiral Rhoderick McGrigor, which returned King Haakon to Norway, arriving in Oslo on 7 June. The king himself sailed in her half-sister, Norfolk.^[28] Later that month, she was outfitted for use as a troopship, and she was used to transport personnel to and from Australia for the rest of the year.^[29][30] On 29 September, Devonshire helped to rescued the survivors of SS Empire Patrol, a freighter loaded with Greek refugees bound from Port Said, Egypt, to Greece, that had caught fire.^[31]