Black Flag Soldiers lying in ambush, 1883 (Source: Flickr)
I am reading Colonial Armies in Southeast Asia at present and I am halfway through a chapter about the French Colonial Army in Vietnam. The chapter discussed the Black Flag Army, which was a Chinese force of former Taiping rebels who had crossed over in to Tonkin to avoid the mopping up by the Qing Imperial Army. The Tonkin Rulers found them useful as a means to combat the French in the 1880s and eventually to draw the Chinese into the war against the French. In having a quick hunt around the net I came across the picture above that appears to have been done to illustrate a 19th century magazine or paper. If you like the above style then I recommend the Flickr account of Huongdieu, the source of the picture, as it has a number of similarly themed pictures.