The late eighteenth century was very active in Saint-Georges-du-Bois. Indeed, during the Chouannerie, Saint-Georges-du-Bois was a usual place of rendezvous of the insurgents. Two main facts are stated in the works of the nineteenth century. On 25 December 1795, 500 chouans attacked a military detachment of 45 Republicans to release six defendants accused of rape and murder. The battle lasted several hours between Saint-Georges-du-Bois and Souligné-Flacé and cause many deaths and injuries. On 12 October 1799, the main army of the Chouans arrived at La Suze-sur-Sarthe and stopped at Saint-Georges-du-Bois to prepare, in peace, the attack on the Le Mans in coordination with the troops arriving by Pontlieue and the road Laval]. The army, under the command of Count Bourmont between 13 October 1799 in Le Mans and returned in the evening at his camp in Saint-Georges-du-Bois. The next day, a column of 1,500 men returned to Le Mans with the Knight Tercier, but the commander in chief, the Earl of Bourmont, who was tired, rested at the camp. The army chouans remained, in total, three days in Saint-Georges-du-Bois before moving to other cities.