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Japan

Japan had conducted detailed studies of the Russian Far East and Manchuria prior to the war and, as it was mandatory for Japanese officers to speak one foreign language, Japan had access to superior maps during the conflict. The Japanese army relied on conscription, introduced in 1873, to maintain its military strength and to provide a large army in times of war. This system of conscription gave Japan a large pool of reserves to draw upon. The Active and 1st line reserve (the 1st line reserve was used to bring the active army to wartime strength) totalled 380,000; the 2nd line reserve contained 200,000; the conscript reserve a further 50,000; and the kokumin (akin to a national guard or militia) 220,000. This amounted to 850,000 trained troops available for service, in addition to 4,250,000 men in the untrained reserve.

Immediately available to Japan on the declaration of war were 257,000 infantry, 11,000 cavalry and 894 pieces of artillery. These figures were divided between the Imperial Guards division, 12 regular divisions, 2 cavalry brigades, 2 artillery brigades, 13 reserve brigades, depot troops and the garrison of Taiwan. A regular Japanese division contained 11,400 infantry, 430 cavalry and 36 guns – the guns being organised into batteries of 6. Though another 4 divisions and 4 reserve brigades were formed in 1904, no further formations were created as the reserves were used to replace losses sustained in combat. Japanese reserves were given a full year of training before entering combat, though as the war progressed this was reduced to 6 months due to high casualties. The Japanese army did not follow the European convention of implementing Corps, thus there were no corps troops or command and the Japanese divisions were immediately subordinate to armies.

Olender gives a different appraisal of Japanese strength, maintaining that there were 350,000 men of the standing army and 1st reserve, with an additional 850,000 trained men in reserve, creating a total trained force of 1,200,000 men. The breakdown of the Japanese standing army is different too, with Olender giving each Japanese division 19,000 men including auxiliary troops; he also states that the 13 reserve brigades contained 8,000 men each and mentions 20 fortress battalions, which is omitted by Connaughton. It is further stated that the Japanese army possessed 1,080 field guns and between 120 and 150 heavy guns at the war's commencement. Japanese cavalry was not considered the elite of the army as was the case in Russia; instead Japanese cavalry primarily acted as scouts and fought dismounted, armed with carbine and sword; this was reflected in the fact that each cavalry brigade contained 6 machine guns.