As to the navy itself, its personnel was increased to 150,000 men. Where the main American fleet was--whether with the British fleet at the Orkneys, or stationed in some other zone--no event transpired to give any clue. But patrol of the South Atlantic, as well as of the American coast, was assumed by the Pacific coast fleet under Admiral Caperton, the remaining French and British warships in those waters acting under his authority. Sea warfare conditions, outside the useful work of the American destroyers provided by the German submarines, gave little scope for naval operations, and it was assumed that the main American fleet, like the British, was lying quiescent, with its finger on the trigger, awaiting its opportunity. The Navy Department meantime busied itself arming scores of American merchant vessels to brave the submarines, and in carrying out an extensive building program, which included the construction of hundreds of submarine chasers--a new type of swift, powerfully armed small craft--as well as of many new destroyers. PART IX--THE RUSSIAN REVOLUTION CHAPTER LXX FORESHADOWING REVOLUTION Without danger of overstatement or exaggeration, it may be said that the most dramatic feature of the Great War's history during the period February-August, 1917, was the revolution in Russia. To outsiders, acquainted with Russian conditions only superficially, it was startlingly unexpected. A revolution, usually, is merely the climax of a long series of events of quiet development, the result of a long period of propaganda and preparation, based on gradually changing economic conditions. The overthrow of the Russian autocracy seems to have been an exception to this general rule--at least in part. For even to close observers nothing seemed more dead than the revolutionary organizations in Russia on the outbreak of the Great War in the summer of 1914. To be sure, when the opportunity came, they sprang into life again and were able to place themselves in control of the situation. But the great climax certainly did not come about through their conscious efforts. For this reason a detailed description of the early revolutionary movements directed against the czar's government is not necessary to a thorough understanding of the events which so startled the world in March, 1917. The causes which brought them about originated after the outbreak of the war. We were in the habit of describing the two great governments, that of the German Empire and that of the Russian Empire, with the word "autocracies." And in that each was, and one still is, controlled absolutely by a small group of men, responsible to nobody but themselves, this was true. Aside from that, no further comparison is possible.