155 years ago, in mainland France in early 1871, a tragic conflict with German states ended. For the Foreign Legion, the war marked a significant moment: for the first time in their history, the legionnaires fought on French soil. However, they had to face harsh conditions, bitter cold, and a war that was already lost.

The original study has been thoroughly reworked, updated with new information, and split into one main and two separate articles. The new format offers a clearer and more detailed look at the subject:
Franco-Prussian War 1870-1871
Other Foreign Volunteer Corps in the 1870–1871 Franco-Prussian War
Irish Company (1870–1871)

 
Les trois textes sont également disponible en français :
Guerre franco-prussienne de 1870
Unités de volontaires étrangers hors de la Légion pendant la guerre de 1870
Compagnie irlandaise (1870)