On 23 September 1793 Carrière was appointed aide-de-camp to General Thomas-Alexandre Dumas (also a former trooper in the 6th Dragoons) and served with him in the Army of the West putting down the revolt in the Vendée until 1796. He was appointed deputy to the General Staff of the Army of Italy on 22 September 1796, and made a captain on 5 October the same year. Acting once more as Dumas' aide-de-camp, he took part in the French invasion of Egypt, following him to the province of Giza and helping to chase out the Arabs. His conduct at the battle of Abukir led to a provisional promotion to "Chef d'escadron" and an appointment as aide-de-camp to General Joachim Murat on 14 August 1799. This promotion was confirmed on his return to France on 21 April 1800. Beamont followed Murat into the Reserve Army, and fought at the Battle of Marengo on 14 June 1800.