British home army in the First World War bridge between Tilbury and Gravesend. There were fears that a German fleet protected by mines and submarines could land a 100,000-strong force before the British Grand Fleet could steam the south from its base at Scapa Flow. To counter this threat, the Admiralty redeployed pre-dreadnought battleships and submarines closer to vulnerable ports, expanded the coastwatch and increased patrolling of the North Sea. In October, Churchill responded to Kitchener's call for the Royal Navy to take more specific precautions against invasion by insisting that the role of the Grand Fleet was to eliminate an invader's covering fleet rather than defeat the
Fleet in being Vladivostok on 10 August 1904. Vitgeft's exit from Port Arthur resulted in the Battle of the Yellow Sea, an excessively long-ranged gun duel that resulted in no capital warships being sunk on either side, but finally eliminated Port Arthur's "fleet in being", as its warships became dispersed to neutral ports (where they were interned), and the survivors were so heavily damaged that they were no longer serviceable. A later example is the stand-off between the German High Seas Fleet and the British Grand Fleet during World War I. Germany largely preferred to keep its fleet intact rather than taking the