In January 1797, his division covered the western side of Lake Garda during the fourth Austrian attempt to raise the Siege of Mantua. Summoned to the east by Bonaparte, some of his troops marched and others crossed the lake by boat to fight at the Battle of Rivoli on 14 January. Arriving in the afternoon, Rey's soldiers helped eliminate Franz Joseph, Marquis de Lusignan's isolated Austrian column south of the main battlefield. The following day, he assisted Barthélemy Joubert in mopping up the shattered Austrian army, capturing large numbers of prisoners.[5] His 4,156-man division included the brigades of Joachim Murat, Louis Baraguey d'Hilliers, and Antoine Joseph Veaux.[6]
War of the Second Coalition
Rey's portrait identifies him as commandant of the advance guard of the Army of Naples.[note 1] He carried out the Siege of Gaeta with 4,000 troops in 1799. Gaeta's 3,600-man Neapolitan garrison surrendered to him on 5 January 1799.[7] Gabriel Rey retired from the army in 1820[2] and died on 20 April 1836.[3]