The Royal Navy's Grand Fleet was the main naval force of the United Kingdom during World War I. Established in 1914, it was primarily tasked with protecting British interests at sea and countering the threat posed by the Imperial German Navy. The fleet was composed of numerous battleships, cruisers, and destroyers, making it one of the largest naval forces of its time. The Grand Fleet was based at Scapa Flow in the Orkney Islands and played a crucial role in major naval engagements, including the Battle of Jutland in 1916. Its strategic presence helped maintain British naval supremacy throughout the war, ensuring the safety of vital supply routes and trade.