In 1840, Youssef aged 17 years, fought alongside his father and elder brother against the Egyptian armies then occupying Lebanon in the battles of Houna and Bazoun.
Several days later however, Christian villages were attacked by Druzes from Mount Lebanon and the Hawran. Karam and his men retaliated against Druze and Turkish forces, and succeeded in saving the majority of Christian towns and villages in the Keserwan area. Christian presence in the area was therefore established.