Of the hunted who do not return to their base we cannot hope to hear much. But there was a smart engagement towards the end of 1917 between an American convoy-escort and a German submarine, of which accounts have been given by both sides, those above water and those below. The convoy was approaching our shores towards dusk of a November afternoon when the attack was made. The U-boat’s periscope--a ‘finger’ one, of only two inches diameter--was sighted by the U.S.S. (destroyer) _Fanning_, which was at the moment turning to port at a speed of about fifteen knots. The submarine was 3 points on the _Fanning’s_ port bow, distant about 400 yards, and going some two knots. The other destroyers had just passed the spot where she was seen; the second of these, U.S.S. _Nicholson_, was now on the _Fanning’s_ starboard bow, and very handy for what was to follow. The commander of the _Fanning_, in order to continue his swing to port, put his helm hard over and at the same time increased speed to full. The periscope, of course, disappeared instantly. But every eye on the _Fanning_ had marked her position. The commander, when he had turned about 30°, ported his helm so as to bring his ship right over the desired place, slightly ahead of the periscope’s last position, and there he dropped a depth-charge, within three minutes of the first alarm. It was a fine piece of work, and, as it turned out, a decisive stroke. Nothing was seen for the moment, beyond the upheaval of water caused by the detonation. The _Fanning_ continued to turn under starboard helm; the _Nicholson_ altered course to starboard, turned, and headed for the spot where the charge had been dropped, intending, no doubt, to drop a shot of her own in the same place. She could not have made a luckier move. The conning-tower of the submarine suddenly broke surface between her and the convoy, about 500 yards from where it had disappeared. The boat was one of the new large-type U-boats, and was evidently hit, for she could neither submerge properly nor keep an even keel, but went rolling up and down like a gigantic porpoise in the direction of the convoy. The two destroyers headed for her at full speed; _Nicholson_, who was, of course, leading, passed over her, dropped her depth-charge, and turned to port, firing three rounds from her stern gun into the wash. Once more the enemy’s bow came up with a bound. This time he made a desperate effort to keep on the surface, and struggled along at two knots, being about 30° down by the stern. Finally he righted himself, no doubt by filling tanks and crowding men forward, and his speed seemed to increase. But by this time _Fanning’s_ guns were speaking to him in unmistakable language; after the third shot the hatch opened, a white shirt was waved, and the whole crew came on deck holding up their hands. [Illustration: ‘The submarine suddenly broke surface.’]