During the early months of the war the Baltic Sea was Germany's own domain. Her merchant vessels went to and fro across its waters without molestation from the British. By July 1915, however, our submarines had got through the dangerous channels, and were busily engaged in destroying German shipping. It was no easy matter for our submarines to enter the Baltic. The Germans had laid mines in the narrow waters by which alone entrance could be gained, and had established a patrol service. They felt sure that they could keep out the British submarines, but they had underestimated British skill, courage, and caution. From that time onward German vessels were sunk at the rate of about two a day. A battleship and at least two cruisers were sunk before the end of November, and a state of panic reigned. It was all-important that the Germans should maintain sea communication with Sweden, from which they drew vast quantities of iron ore and other raw materials, and also with Denmark. You can imagine their consternation when they found that none of their merchant ships dare leave port without the risk of being sent to the bottom. I need not tell you that in every case the British were most careful to save the lives of the crews. * * * * * One of the most successful of our submarine officers was Commander Max K. Horton. He was present during the Battle of Heligoland Bight, and you have already read (page 168, Vol. II.) how on September 13, 1915, he sank the light cruiser _Hela_, and was playfully dubbed by his comrades "The Double-toothed Pirate." The next day, at great risk, he examined the outer anchorage of Heligoland, and on 6th October sank a German destroyer off the mouth of the Ems. When or how he got into the Baltic Sea we do not know, but we do know that on July 2, 1915, he torpedoed the German battleship _Pommern_, and that shortly afterwards the Tsar recognized this important service by conferring on him the Order of St. George. At the same time the cross of the same order was awarded to the members of his crew. During the Battle of the Gulf of Riga, which I shall describe in a later chapter, Commander Noel Laurence torpedoed the German cruiser _Moltke_, which, you will remember, took part in the East Coast raids and in the Battle of the Dogger Bank. She was badly disabled, and was towed away, probably towards Kiel. The Tsar awarded Commander Laurence and his crew similar distinctions to those conferred upon Commander Max Horton and his comrades. * * * * *