The British were quick to organise diplomatic pressure against Argentina. Because of the long distance to the Falklands, Britain had to rely on a naval task force for military action. The overall naval force was commanded by the Commander-in-Chief Fleet, Admiral Sir John Fieldhouse, who was designated Commander Task Force 317, and had three to four subordinate task groups, depending on the stage of the war. Rear Admiral John “Sandy” Woodward’s Task Group 317.8 was centred around the aircraft carriers HMS "Hermes" and the newly commissioned HMS "Invincible" carrying only 20 Fleet Air Arm (FAA) Sea Harriers between them for defence against the combined Argentinian air force and naval air arm. The task force would have to be self-reliant and able to project its force across the littoral area of the Islands.