No I don't think so. The map with the Schlieffen's plane is about the plan only. It is OK. The German's attack on Belgium reffres to the WW1 start and it should be there rather.
Japan declared war on Germany on 23 August 1914
Japan declared war on Austria-Hungary on 25 August 1914
Japan attacked Tsibgtao on 2 September 1914
Japan captured German islands in October 1914.