detonated the shell. On 15 November 1906, she ended her Atlantic Fleet service and was paid off at Devonport. Magnificent was commissioned into reserve on 16 November 1906, based at Chatham. During her reserve service, she was attached to the Gunnery School at Sheerness as a gunnery training ship in December 1906. Magnificent left Chatham in March 1907 and was assigned to the Nore Division of the Home Fleet at the Nore. During this service, she temporarily was flagship of the Commander-in-Chief in November 1907 and underwent a refit at Chatham in 1908 during which she had new fire control systems installed and was converted to burn fuel oil. She served as the second flagship of the Home Fleet from August 1908 to January 1909. Magnificent was reduced to a nucleus crew in February 1909 as part of the commissioned reserve. On 24 March 1909, she became the flagship of the Vice Admiral, 3rd and 4th Divisions, Home Fleet, at the Nore. She was relieved as flagship on 1 March 1910 by the battleship . On 27 September 1910, Magnificent was recommissioned into the Home Fleet to serve as a turret drill ship and stokers' training ship at Devonport. Her sternwalk was damaged in a collision in December 1910. She became tender to the turret drill ship in February 1911 and a seagoing gunnery training ship at Devonport on 14 May 1912. She was slightly damaged on 16 June 1913 when she ran aground in fog near Cawsand Bay. She recommissioned for 3rd Fleet service on 1 July 1913. World War I During a precautionary mobilization of the fleet immediately prior to the outbreak of World War I, Magnificent and her sister ships , , and on 27 July 1914 formed the 9th Battle Squadron, subordinate to the Admiral of Patrols and stationed at the Humber. Magnificent served as guard ship at the Humber. World War I began while she was stationed there. On 7 August 1914, the 9th Battle Squadron was dissolved, and Magnificent and Hannibal transferred to Scapa Flow to reinforce the defences of the anchorage of the Grand Fleet there, becoming a guard ship at Scapa Flow. The Majestic-class ships were by then the oldest and least effective battleships in service in the Royal Navy. The first-class protected cruiser relieved Magnificent of guard ship duty on 16 February 1915, at which point Magnificent was paid off. Later