The Battle of Rocheserviere was fought at Rocheservière on the 20 June 1815, between Vendéan Royalists, who had remained loyal to King Louis XVIII during the Hundred Days, and Napoleon's Army of the West, commanded by General Jean Maximilien Lamarque.

[1] The Army of the West had been formed to pacify the region and support the new French government instigated by Napoleon Bonaparte after his return to Paris at the start of the Hundred Days in 1815.

While Napoleon marched north to deal with the threat from the British and Prussian armies during the Waterloo campaign, Lamarque was sent to pacify the Royalist stronghold of the Vendée.

He soon learned that a Vendean army of around 8000 men under Charles Autichamp and Pierre Constant Suzannet was concentrating in the vicinity of Rocheservière.

Suzannet occupied the heights of Rocheservière, protected to the west by the Boulogne river, which was difficult for an army to cross.

These positions would be difficult for the Bonapartists to attack, but on 19 June Suzannet's force suddenly withdrew from Rocheservière and occupied Mormaison to the south east.

The first information to emerge about the wider military situation was news of Napoleon's victory at the Battle of Ligny.

[2] When news came through shortly afterwards of Napoleon's defeat, Lamarque convinced the Royalists not to exploit the situation but to allow the area to be occupied by the advancing Prussian troops.