I'm painting up some miniatures of World War I German dragoners and I'm finding it hard to find any references for feldgrau uniforms. There's tons of information on all the dunkelblau waffenrock pre-war stuff, but not much on what was actually worn during the war. Are there any reference charts with colors of cuffs, piping, shoulderboards, etc. that anyone knows of, or any book with descriptions of these details for all the dragoner regiments while worn in the field, 1914-18?