As a former Director of Ordnance and Torpedoes, and thus familiar with every branch of munitionment; as a former Third Sea Lord in control of ship-building and equipment; and, as Second Sea Lord, responsible not only for _personnel_ but familiar, as Deputy for the First Sea Lord, with all questions of strategy, Admiral Jellicoe, apart from his personal qualities, had had unique opportunities of studying the whole naval problem from every possible standpoint. He had proved himself in addition, during naval manoeuvres, a tactical leader of the highest order; and he was already due, later in the year, to succeed Sir George Callaghan in command of the Home Fleets. It was therefore decided--not without considerable personal reluctance on the part of Admiral Jellicoe himself--that he should at once replace Sir George Callaghan on board the fleet-flagship _Iron Duke_; and nothing could have been more typical of naval _esprit de corps_ and the subservience of even the most illustrious officer to the interests of the whole service than that this incident took place without a trace of bitterness or the slightest personal jealousy. Even so, five years after Trafalgar, having never been allowed to set foot again on English soil, Collingwood had died in his cabin, content that in his long sea-exile he had served his country; and even so, having carried upon his shoulders perhaps the heaviest individual responsibilities of the war, Jellicoe himself, at the end of 1917, walked quietly out of the Admiralty to hang pictures at home. Born on December 5, 1859, Sir John Jellicoe was in his fifty-fifth year when he stepped on board the {17} _Iron Duke_ as admiralissimo of the Grand Fleet. The son of a well-known captain in the mercantile marine, who lived long enough, as it is pleasant to remember, to witness his son's success, he was also related ancestrally to that Admiral Patton, who had been Second Sea Lord at the time of Trafalgar; while, in Lady Jellicoe, daughter of the late Sir Charles Cayzer, one of the Directors of the Clan Line of Steamships, he had formed, on his marriage, yet further connections with the sea. After a few years at a private school at Rottingdean, he had entered the _Britannia_ as a cadet in 1872, and, from the first, seems without effort to have made the fullest use of his opportunities.