German armies 1870-71 - Michael Solka

Although the war of 187071 has gone down in history as the 'Franco-Prussian War', nearly half of the German troops sent to the frontier were from other German states
both the willing members of the North German Confederation and the southern states who were in some cases more hesitant about accepting Prussian domination. Some contingents had only one or two regiments
though these might be of high quality, like the 'Black Brunswickers'; others provided whole army corps, like Bavaria and Saxony. This book lists and illustrates the organization and varied uniforms of all these allied contingents, most of which fought well when it came to the test of battle.