For the complete mobilization of the Navy, as it then stood, 99,809 regularly enlisted men and 45,870 reserves were necessary. About twenty-seven thousand of these were needed for coast defense, and twelve thousand at the various shore stations. Retired officers were called out, and assigned to duty which would permit officers on the active list to be employed in sea duty. The Navy therefore still lacked thirty-five thousand men to bring it up to its full authorized strength at the beginning, but after the declaration of war an active recruiting campaign brought volunteers by thousands. The service was a popular one and recruits were easily obtained.
One of the first phases of the mobilization was the organization of a large fleet of mosquito craft to patrol the Atlantic Coast, and keep on the watch for submarines. Many of these boats had been private yachts, and hundreds of young men volunteered from the colleges and schools of the country for this work. Many boat builders submitted proposals to construct small boats for this kind of patrol duty, and on March 31st a coast patrol fleet was organized by the government under the command of Captain Henry B. Wilson.
The Navy took possession immediately on the declaration of war of all wireless stations in the United States dismantling all that could not be useful to the government. War zones were established along the whole coast line of the United States, making a series of local barred zones extending from the larger harbors in American waters all along the line. These harbors were barred at night to entering vessels in order to guard against surprise by German submarines. Contracts were awarded for the construction of twenty-four destroyers even before war was declared, and many more were already under construction.
[Illustration: Map]
MAP OF THE UNITED STATES SHOWING THE IMMENSE LENGTH OF COAST-LINE TO
BE DEFENDED
The growth of the Navy in one year may give some idea of the efficiency of the Navy Department. In April, 1917, the regular Navy contained 4,366 officers and 64,680 men. In April, 1918, it contained 7,798 officers and 192,385 men. In the Marine Corps in 1917 there were 426 officers and 13,266 men. In one year this was increased to 1,389 officers and 38,629 men. In the organization of the Naval Reserves, naval volunteers and coast guards there were in 1917, 24,569 men, in 1918, 98,319 men, and 11,477 officers.
While personnel of the Navy was thus expanding the United States battle fleet had grown to more than twice the size of the fleet before the war. When war was declared there were under construction 123 new naval vessels. These were completed and contracts made for 949 new vessels. Among the ships completed are fifteen battleships, six battle cruisers, seven scout cruisers, twenty-seven destroyers, and sixty-one submarines. About eight hundred craft were taken over and converted into transports, patrol service boats, submarine chasers, mine sweepers and mine layers.
The government also seized 109 German ships which had been interned in American ports. The Germans had attempted to damage these ships so that they would be useless, but they were all repaired, and carried American troops and supplies in great quantities to France.
As the fleet grew the training of the necessary officers and crews was conducted on a grand scale. Naval camps were established at various points. The main ones were those at Philadelphia, (League Island); Newport, Rhode Island; Cape May, New Jersey; Charleston, South Carolina; Pensacola, Florida; Key West, Florida; Mare Island, California; Puget Sound, Washington; Hingham, Massachusetts; Norfolk, Virginia; New Orleans, San Diego, New York Navy Yard; Great Lakes, Illinois; Pelham, New York; Hampton Roads, Virginia; and Gulfport, Mississippi. Schools in gunnery and engineering were established and thousands of gunners and engineers were trained, not only for the Navy but for the armed merchant vessels.
The training of gun crews by target practice was a feature of this work. Long before the war began systematic training of this kind had been done, but mainly in connection with the big guns, and great efficiency had been obtained by the steady practice. With the introduction of the submarine, it became necessary to pay special attention to the training of the crews of guns of smaller caliber, and it was not long before the officers of our Navy were congratulating themselves on the efficiency of their men. It is not easy to hit so small a mark as the periscope of a submarine, but it could be done and many times was done.
Twenty-eight days after the declaration of war a fleet of United States destroyers under the command of Admiral William S. Sims reported for service at a British port.