naval prisons and detention camps. Service Agincourt was working up until 7 September 1914, when she joined the 4th Battle Squadron (BS) of the Grand Fleet. The fleet anchorage at Scapa Flow was not yet secure against submarine attack and much of the fleet was kept at sea, where Agincourt spent forty of her first eighty days with the Grand Fleet. This was the beginning of "a year and a half of inaction, only broken by occasional North Sea 'sweeps' intended to draw the enemy from his bases." On 1 January 1915, Agincourt was still assigned to the 4th BS, but had been assigned to the 1st Battle Squadron before the Battle of Jutland on 31 May 1916. She was the last ship of the Sixth Division of the 1st BS, along with , and the flagship, , the most heterogeneous group possible as each ship was from a different class. The Sixth Division was the starboardmost column of the Grand Fleet as it headed south to rendezvous with the ships of Admiral Beatty's Battle Cruiser Fleet, then engaged with their opposite numbers from the German High Seas Fleet in the North Sea. Admiral Jellicoe, commander of the Grand Fleet, kept it in cruising formation until 18:15, when he ordered it to deploy from column into a single line based on the port division, each ship turning 90° in succession. This turn made the Sixth Division the closest ships in the Grand Fleet to the battleships of the High Seas Fleet, and they fired on each ship as they made their turn to port. This concentration of fire later became known as "Windy Corner" to the British, as the ships were drenched by German shell splashes although none were hit. At 18:24, Agincourt opened fire on a German battlecruiser with her main guns. Shortly afterwards her six-inch guns followed suit as German destroyers made torpedo attacks on the British battleships to cover the turn to the south of the High Seas Fleet. Agincourt successfully evaded two torpedoes, although another struck Marlborough. Visibility cleared around 19:15, and she engaged a without result before it was lost in the smoke and haze. Around 20:00, Marlborough was forced to reduce speed because of the strain on her bulkheads from her torpedo damage and her division mates conformed to her speed. In the reduced visibility the division lost sight of the Grand Fleet during