The Navy-that-Floats and the Navy-that-Flies usually go about their work sustained by the companionship of others of their kin. From first to last their ways are plain for all men to behold. They fight, and if need be, die, heartened by the reek of cordite-smoke and cheering, or full-flight between the sun and the gaze of breathless armies. It is otherwise with the Navy-under-the-Sea. Submarines may leave harbour in pairs, their conning-towers awash, and the busy hand-flags exchanging dry witticisms and personalities between the respective captains. But as the land fades astern, of necessity their ways part; it is a rule of the game in the Submarine Service that you do your work alone; oft-times in darkness, and more often still in the shadow of death. There is appointed an hour and a day when each boat should return. After that there is a margin, during which a boat might return; it is calculated to cover every conceivable contingency; and as the days pass, and the slow hours drag their way round the wardroom clock on board the Submarine Depot Ship, the silences round the fireplace grow longer and there is a tendency in men’s minds to remember little things. Thus he looked or lit a pipe: scooped the pool at poker: held his dog’s head between his hands and laughed.... After that a typewritten list of names is pinned on the wall of the little chapel ashore, and here and there among the rows of quiet houses on the hill some white-faced woman folds up empty garments and slowly begins to pack.... That is all. From first to last, utter silence and the Unknown. In this way has been begotten a tradition peculiar to the Navy-under-the-Sea. In the parent Navy it is not meet to talk “shop” out of working hours; in the Navy-under-the-Sea every aspect of life is a jest; but neither in seriousness nor in jest does one refer to Death. A certain lieutenant in command of a British submarine was returning from patrol in waters frequented by German men-of-war, when he rescued the crew of a Danish steamer torpedoed and sunk by a German submarine. It was blowing a gale and his timely intervention saved the lives of the castaways. The Depot Wardroom listened to the tale and approved. It even warned the hero that he might find himself the possessor of a pair of presentation binoculars if he weren’t careful. The hero expressed his views on that aspect of the affair (they need not be repeated here) and straightway forgot the incident. He was on his way back from his next spell of patrol work a few weeks later when he again encountered in an open boat the crew of another torpedoed ship. They were Dutch this time, and they had been pulling for nineteen hours in a winter gale, so that their hands were flayed to the bone. These he also rescued and brought back with him to the base; thence they were sent in comfort to their native land to reflect at leisure on Germany’s methods of conducting submarine warfare, as compared with those of Great Britain.