The second Battle of Saint-Aubin du Cormier was a conflict between the anti-revolutionary Chouans and the French Republican forces during the Chouannerie. The First Battle of Saint-Aubin-du-Cormier took place in 1488. A substantial force of 1200 Chouans under Gustave Hay de Bonteville moved to meet the small Republican force of 500 men, encountering them close to Saint-Aubin-du-Cormier. The Republicans were taken by surprise, losing 90 men killed or injured to the loss of 2 Chouans and 12 injured.