Battle of the Yalu River (1904) map
Sources: 

Richard Connaughton 2003, Rising Sun and Tumbling Bear, Londra, Cassell, 2003, p. 65, ISBN 0-304-36657-9.
Geoffrey Jukes, The Russo–Japanese War 1904–1905, Wellingborough, Osprey Publishing, 2002, p. 34, ISBN 978-1-84176-446-7.
Own work
Moroboshi