Tsing-tau's principal points of defense were Mount Moltke, Mount Bismarck and Mount Iltis. The rugged slopes of these positions commanded the plain. Beyond the plain the important outer line of defense was along the Litsum River, which flows into Kiao-chau Bay and then through the mountains to the sea, a line about eight miles long and about ten miles distant from the city. Preparations to oppose a landing of hostile troops were made at points along the coast of the leased territory for a distance of twenty miles. At the entrance of the bay shore batteries and mines made a bombardment by the Japanese fleet impracticable, except with the support of land forces.
The first line of defense comprised five forts connected by trenches and barbed wire entanglements. The shore defenses consisted of five forts, called respectively: "The Kaiser's," armed with two large guns mounted upon unsheltered platforms and two cannon of medium caliber sheltered; "August Point," a square closed fort with unsheltered gun platforms, and two guns of large medium caliber; "Taisichen," unsheltered with four large cannon; "Kaiser Northeast," unsheltered four cannon; "Yunuisan Point," two cannon of medium caliber. The main line of defense was for both land and sea work; "Fort Moltke" at the base of the German left wing had a shelter trench and guns of medium caliber; "Fort Bismarck" had three heavy gun platforms in addition to a platform for rapid fire guns of large caliber. From this the guns could be turned in any direction. "Fort Iltis" mounted four heavy guns of large and medium caliber besides mitrailleuse of large size. Two heavy guns were mounted in the summit of Mount Iltis.
In command of the German forces was the Governor General of Kiao-chau, Admiral Meyer-Waldeck, a naval officer of experience and reputation. The defenses of both land and sea were under his control.
This entrance of Japan into the war introduced a factor fraught with unknown possibilities. Unlike the other enemies of the Teutonic alliance, Japan had nothing to fear for her home territory or her possessions. Secure from attack, she was able to devote all her energies to the task of driving the Germans out of the Far East. By this accomplishment she not only fulfilled the terms of her alliance with Great Britain, but strengthened her own supremacy in that quarter of the globe.
Tsing-tau, since its occupation by the Germans, had been like a mailed fist brandished in her face. Since Japan's victory over Russia no other European power had occupied a position on the Asiatic coast that offered a threat comparable to this German stronghold. Also, it was only human that the Japanese remembered how Germany compelled them to abandon many of their fruits of victory in their last war with China.
The unknown factor of her participation was just how far Japan would go in aiding her new allies. The military and naval potentialities of the Island Kingdom when the war started were greater than ever before. She was twice as strong as when she went to war with Russia. Her navy was sufficiently formidable to resist, in home waters at least, that of any other power except England. Her army, twice proved during recent years against the soldiers of Russia and China, was steadily increasing its size and equipment. Her predominant position in the Far East was absolutely assured.
The Japanese army, based to a certain extent upon the German model, numbered at the outbreak of the war somewhat over 250,000 men of all ranks. This was its peace strength. Military service was obligatory upon all able-bodied males between the ages of seventeen and forty. This law made available each year 550,000 men, but in practice during times of peace the annual conscription amounted to only 120,000 men taken by ballot from among the number eligible. The total effective military strength of the Empire was estimated at a million and a half trained soldiers.
The army was divided into nineteen divisions, four independent cavalry brigades, three independent field artillery brigades, six regiments of heavy field artillery and a communication brigade. Each divisional unit consisted of two infantry brigades of six battalions each, a cavalry regiment (three squadrons of 120 men each), a field artillery regiment (six batteries of six guns), and a battalion of army service corps. A battalion of mountain guns was attached to certain divisions. Thus the army on a peace footing consisted of seventy-six infantry regiments (228 battalions), twenty-seven regiments of cavalry. 150 field batteries, nine mountain batteries, nineteen battalions of garrison artillery and nineteen battalions of engineers. When the reserves were summoned to the colors the Japanese system provided for an indefinite increase in the number of battalions for each regiment.
The Japanese navy had weathered a storm which at one time threatened to interfere seriously with its steady growth, and the year 1914 found it at a formidable climax of strength and efficiency. The war with Russia had left the nation on the verge of bankruptcy and the annual budgets from 1907 to 1910 contained no appropriations for naval increases. The lull in naval construction, however, was of short duration. The wisest statesmen realized, from the time when Japan first emerged from her Oriental seclusion and eagerly set out to learn the lessons of western civilization, that their country's insular situation made a strong navy the first requisite of national independence. It was the warships of the western world that forced the Japanese to open their door to the foreigner. Fifteen years after the Japanese had seen the foreign men-of-war riding dominant in their harbors, their antiquated collection of war junks had been replaced by an up-to-date navy, manned and officered by sea fighters trained upon the best western models. In 1910 the Japanese began to compare their naval equipment with that of Germany, and from that time their shipbuilding program was designed to make them secure against the chance of German aggression, ever present since the leasing of Kiao-chau.
At the outbreak of the Great War the Japanese navy had nearly doubled its strength since the close of the war with Russia. It included two battleships of the dreadnought class, the Kawachi and the Settsu, both over 21,000 tons, with a speed of twenty knots, two dreadnought battle cruisers of 27,500 tons each and a speed of twenty-seven knots, the Kongo and the Hiyei; two semi-dreadnought battleships, the Aki and Satsuma, between 19,000 and 20,000 tons each and a speed of twenty and eighteen and a quarter knots, respectively; four first-class battle cruisers with speeds ranging from twenty to twenty-three knots and averaging 14,000 tons; six battleships of slightly heavier displacement and slightly less speed; six first-class coast defense ships, averaging 13,000 tons and seventeen and a half knots; nine first-class cruisers ranging from 7,300 to 9,800 tons and twenty to twenty-one knots; thirteen second-class cruisers, some of which had a speed of twenty-six knots; seven second-class coast defense ships; nine gunboats, two first-class destroyers capable of thirty-five knots an hour; two second-class destroyers with a speed of thirty-three knots; and forty-six other destroyers of varying speeds; thirty-one torpedo boats and thirteen submarines, besides auxiliary craft, hospital ships, dispatch boats, etc.