Berruyer had also started early, and sent five hundred men to May, where he expected Leigonyer to arrive in a few hours; but before he reached the town the Vendeans attacked the advanced guard of the latter general, which consisted of two companies of grenadiers. These old soldiers fought well, and threw themselves into the chateau of Bois-Groleau.
Leaving fifteen hundred men to surround and attack the chateau, the main army pressed forward. Leigonyer, hearing of the disaster, sent forward two thousand men to succour the besieged force; but the Vendeans fell upon them and, after a short resistance, they broke and fled into Vezins.
The arrival of the fugitives caused a panic among the whole of Leigonyer's force assembled there, and they fled precipitately; two hundred and fifty men of the regiment of Finisterre, alone, remaining steady; and these, maintaining good order, covered the retreat of the guns, repulsing the attacks of the peasantry who pursued them. Fortunately for the Vendeans, a waggon laden with barrels of powder was left behind, in the confusion caused by their approach, and proved of inestimable value to them.
Had the Vendeans pursued the fugitives with vigour, the force would have been almost annihilated; but Cathelineau, learning from Leigh's scouts that Berruyer was already approaching Vezins, feared to be taken in the rear by him, and therefore fell back to May and Beaupreau.
The garrison that defended the chateau of Bois-Groleau repulsed the repeated attacks made upon them, but surrendered on the approach of the main army, their ammunition and the food they had brought with them in their haversacks being entirely exhausted.
Berruyer, on his arrival at Jallais, heard of the defeat of Leigonyer; and marched back in all haste to Chemille, where he had left his magazines. On hearing however that Leigonyer, on his arrival at Vihiers, had been deserted during the night by the whole of his troops and, finding himself in the morning with but a hundred and fifty men of the Finisterre regiment, had evacuated the town and retreated to Doug, Berruyer wrote to him to endeavour to gather his forces together again, and to return to Chemille.
But the news of another disaster convinced him that he could not maintain himself there. The Vendeans had marched, without delay, against Beaupreau, and attacked Gauvillier. That general had already heard of the defeat of Leigonyer, and the retreat of Berruyer. His force was greatly dispirited at the news, and offered but a feeble resistance to the fierce assault. The Blues were driven out of the town with the loss of their five cannon, and were hotly pursued to Saint Florent, losing a large proportion of their numbers on the way.
The news of this fresh disaster convinced Berruyer that he must fall back without delay, and he accordingly retreated with his whole force to Saint Lambert, whence he wrote to the Convention to declare the impossibility of doing anything without large reinforcements of regular troops, as no dependence whatever could be placed upon the National Guards and volunteers and, if the insurgents marched against him, he would be obliged to march to Ponts-de-Ce in order to cover Angers, where the alarm of the inhabitants was intense.
Thus the invasion that was to crush the Vendeans failed altogether, except that some advantages had been gained by the Blues along the line of coast, the troops being assisted by the fleet. At all other points, misfortune had attended them. Quetineau had been driven from Aubiers and, a great proportion of his force having deserted, he held Bressuire with so feeble a grasp that he could not maintain himself, if attacked. Leigonyer's army had practically ceased to exist, as had that which had advanced from Saint Florent. Berruyer had lost three thousand men, and was back again at the point from which he had started. Chollet and Vihiers had been recovered without a blow.
As the result of his failures, Berruyer was recalled to Paris, tried for his conduct, and narrowly escaped the guillotine.