In November 1795, Rampon was named commander of what soon became the 32nd Demi-Brigade. During the Montenotte Campaign he gained fame by his gallant defense of Monte Negino (or Legino) on 11 April 1796, where his soldiers repelled the attacks of a superior Austrian force. He rallied his men by making them swear an oath to "conquer or die".[2] The next day, he led his demi-brigade at the Battle of Montenotte, and later in the week he fought at the Second Battle of Dego. For his actions, General Bonaparte appointed him a brevetgeneral of brigade.
While in André Masséna's division, Rampon played a major role at the battles of Lonato and Castiglione in August. On another occasion, he took care to protect local villagers from marauding French soldiers, according to one account.[3] On 4 September he led the 32nd demi-brigade at the Battle of Rovereto.[4] On 15 September he fought in the action of La Favorita-San Giorgio during the Siege of Mantua. He performed "particularly well at Arcola where his men repelled a counterattack."[5] He also led his demi-brigade at the Battle of Rivoli on 14 January 1797 and in the clash at La Favorita two days later. He was described by Louis Desaix as, "square figure ... not a thief, big, leans backward; very dark skin".[6]
During the Napoleonic Wars, Emperor Napoleon placed Rampon in several positions of trust. He became a Count of the Empire in 1808 and commanded the Camp of Boulogne in 1809. In 1814 he held the fortress of Gorinchem (Gorkum) in the present-day Netherlands until 7 February, when he was compelled to surrender to the Prussians.
Rampon rallied to Napoleon during the Hundred Days and thereafter the Bourbons held him in ill-favor until 1819 when his noble title was restored. He died on 2 March 1842 in Paris. The name RAMPON is engraved on Column 24 of the Arc de Triomphe in Paris.
Robert, Adolphe; Cougny, Gaston (1889–1891), "RAMPON (JOACHIM-ACHILLE, COMTE)", in Edgar Bourloton (ed.), Dictionnaire des Parlementaires français (1789–1889) (in French), retrieved 2018-04-16