The page lists evidence documents from Wikipedia.

Wikipedia documents
Siege of Metz (1870) - Wikipedia
https://en.wikipedia.org/wiki/Siege of Metz (1870)





German Army (German Empire) - Wikipedia
https://en.wikipedia.org/wiki/German Army (German Empire)





Battle of Sedan - Wikipedia
https://en.wikipedia.org/wiki/Battle of Sedan





Franco-Prussian War - Wikipedia
https://en.wikipedia.org/wiki/Franco-Prussian War