HMS Lord Nelson and Agamemnon transferred to the 5th Battle Squadron in late 1914. HMS Revenge briefly joined the squadron in 1915, before the squadron was broken up. Most of the ships were sent to the Mediterranean.
On 13 November 1917, Rear Admiral Hugh Rodman broke his flag in USS New York as Commander, Battleship Division 9. After preparations for "distant service", USS Wyoming, New York, Delaware, and Florida sailed for the British Isles on 25 November and reached Scapa Flow, Orkney Islands, on 7 December 1917. Although retaining their American designation as Battleship Division 9, those four dreadnoughts became the Sixth Battle Squadron of the British Grand Fleet upon arrival in British waters. The 6th Battle Squadron operated from Scapa Flow and Rosyth.
The U.S. Battleships serving in the 6th Battle Squadron were: