During the Franco-Prussian War of 1870, Lumeau was in the middle of the Loigny-Poupry battlefield, between the French Armée de la Loire and the Bavarian and Prussian troops. The battle spread over the municipalities of Guillonville, Loigny, Lumeau and Poupry on 2 December 1870. Lumeau was mainly involved in combat events from 29 November to 3 December 1870, while further rescue activities took place from 2 December 1870 to 18 February 1871.