In 1796 Cassagne led the scouts of the left wing of André Masséna's division. Ordered to pursue the Austrians after the Battle of Lonato, he was seriously wounded by a musket shot in the chest on 3 August near Lake Garda. Still leading his scouts, he forced a body of Austrian cavalry to surrender on 16 January 1797 near Mantua. He was shot in the left leg at the Battle of Tarvis in March. During the campaign in Egypt, Cassagne commanded the scouts of Louis André Bon's division. He fought at the Battle of the Pyramids in 1798 and at the Siege of Acre in 1799. At Acre he was stabbed twice in the left thigh, twice in the left arm and once in the hand. His wounding occurred on 29 May 1799 while storming a defensive work and killing every Turkish defender, at the cost of two-thirds of his own soldiers. He was promoted "chef de bataillon" for this action. Cassagne was shot through the thigh while fighting the British at the Battle of Alexandria on 21 March 1801. He was appointed colonel of the 25th Line Infantry Demi-brigade on 29 May of the same year.