page_title: Battle of the Yalu River (1904)
section_title: Prelude
hierarchical_section_title: Battle of the Yalu River (1904) / Prelude
context_page_description: The Battle of the Yalu River lasted from 30 April to 1 May 1904, and was the first major land battle during the Russo-Japanese War. It was fought near Wiju on the lower reaches of the Yalu River, on the border between Korea and China.
context_section_description: The prelude to major action took place at 21:45 (9:45 pm) on the night of 25 April 1904, when two battalions of the Japanese 2nd Division seized two islands in the Yalu River without opposition. After reinforcement at 0400 on 26 April by units from the Guards Division and a brief firefight, the forward Russian observation post withdrew to the main Russian lines on the north shore.
  Japanese engineers determined that ten bridges 1,630 yards (1490.5m) would be required to span the river. A third of these were steel prefabricated pontoons which weighed 100 pounds each. The remainder were made from local resources. In full view of Russian positions, the Japanese began constructing a causeway across the Yalu River, which was immediately targeted by two Russian batteries. With the Russians so engaged, the Japanese prepared nine other bridges that could quickly be moved into position for a rapid assault across the river at other locations.
  Once the midstream islands were secured, General Kuroki ordered a feint on the lower Yalu River when Japanese gunboats engaged Cossack detachments at the river mouth. This convinced General Zasulich that the main Japanese attack would fall on the vicinity of the town of Antung, and he concentrated his forces there.
  Kuroki was thus able to maneuver against the weak Russian left, and deployed the 12th Division and Guards Division across the Yalu River at a fordable point. The Russians observed these movements with trepidation, and General Kashtalinsky informed General Zasulich that the Japanese were about to assault the position in force and his position was in danger of being flanked. Zasulich chose to ignore the reports, thinking that the attack was only a feint, and redeployed a single battalion with four guns. Zasulitch remained convinced that the main Japanese attack would fall at Antung, and kept his main force as well as his reserves at that location.
caption: Picture of Our Valorous Military Repulsing the Russian Cossack Cavalry on the Bank of the Yalu River by Watanabe Nobukazu (1874–1944), March 1904
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