It occurred at La Brossinière (commune of Bourgon, Mayenne), between the forces of England and France, shortly after hostilities had resumed, following the battle of Agincourt (1415).

Chronique de la Pucelle reports that "there were great deeds of arms done"[1] and that the English "were beaten in the field and there were fourteen to fifteen hundred killed"[2] The battle of Agincourt had been particularly damaging for the nobility of the region.

[3] He seized Segré, and there mustered a huge collection of loot and a herd of 1,200 bulls and cows, before setting off to return to Normandy, taking hostages as he went.

Queen Yolande of Aragon, mother-in-law to Charles VII of France, who was in her town of Angers, had the first thought of avenging the affront and the damage to her county, and gave orders for such a mission to the most valiant of the French king's partisans, Ambroise de Loré, who had been commander of Sainte-Suzanne since 1422.

D'Aumale had not yet arrived in Laval on Friday 24 September, but set off again as early as the Saturday morning, on his way to take up a position on the road to follow the English, sending scouts to keep an eye on their march and to inform him of it exactly.

Trémigon, Loré and Coulonges wanted to make an attempt on the defences, but they were too strong; they turned and attacked the English in the flank, who were broken and cornered against a large ditch, losing their order.