The Siege of Tsingtao was the attack on the German-controlled port of Tsingtao (now Qingdao) in China during World War I by Japan and Britain between October and November 1914 against Germany. It was the first encounter between Japanese and German forces, and also the first Anglo-Japanese operation during the war.
More details on the Siege here
This map was published in October 1914 in the North China Herald and details the lay of the land and the forces involved in quite some detail.
PS: more images form the Siege of Tsingtao on my Tumblr overspill site – http://chinarhyming.tumblr.com/