He joined the cavalry, and on 20 December 1847 was sent to the École Nationale d'Équitation at Saumur as an officer cadet.

[3] Vast-Vimeux returned to the army during the Franco-Prussian War of 1870 as colonel of the 8th regiment of Gardes mobiles of Charente-Inférieure.

[3] He fought with the Armée de la Loire in the 1st Infantry Brigade and the 1st Division of 16th Corps.

[1] Vast-Vimeux was elected to the National Assembly on 8 February 1871 for Charente-Inférieure, and sat with the Appel au peuple parliamentary group.

During his campaign for the senate Vast-Vimeux and the former deputies Auguste Roy de Loulay and Jean-Baptiste Boffinton signed a circular in which they declared, "In the day of peril, on the 24th of May, we have placed Marshal MacMahon in power, that is to say that respecting the rights conferred on him by the Constitution we shall support with all our energy the government which has so clearly affirmed its desire to combat the spread of anti-social doctrines and revolutionary programs.

But when the time comes to revise the Constitution, as supporters of the appel au peuple (plebiscite), we will demand the right of the nation to pronounce directly on the form of its government.

[5] Vast-Vimeux was elected to the Chamber of Deputies on 18 October 1885, holding office until 20 July 1888, again sitting with the Appel au peuple.