In the Russo-Japanese War, the telephone joined in the battle. Each Japanese unit advanced on the battlefield carrying the telephone and drawing copper lines. The telephone strategy of the Japanese army was to connect a group consisting of three divisions with a general by telephone and each general with the marshal. Meanwhile, behind the boom of victory, Yosano Akiko left the words "You shall not die." and Kotoku Shusui published antiwar views representing the other side of the war.

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