French Guerrilla War & German Retaliation during the Franco-Prussian War 1870 March 1, 2023 Unipro2013main History, Military, Military History History Documentaries The French increasing reliance on franc-tireurs, guerrilla style fighters, is causing brutal German retaliation and a spiral of violence in the fall phase of the Franco-Prussian War. Credit Real Time History Please support our Sponsors here :