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. On 4 September he led the 32nd demi-brigade at the Battle of Rovereto. 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." 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".