Hi Vanth, I've looked on Google, there is a 360 panoramic view which is useful and a few pictures of the town as it is today which I hope will come in handy. I'm using the same Osprey as you, plus the Franco Prussian War (1) Imperial Troops for the French as a lot of the uniforms hadn't altered much.
As a matter of fact most of them did not change until 1916!