Geagea steadily rose through the ranks and led several operations at the request of Bachir Gemayel, then commander of the Phalangist Kataeb Regulatory Forces militia. In June 1978, following the murder of a Phalangist party leader in the North Lebanon called Joud el Bayeh in a power struggle with former president Suleiman Frangieh, Bachir Gemayel ordered Geagea and Elie Hobeika to co-lead a unit to capture the suspects who were taking cover in Frangieh's mansion in Ehden. The incident is known as Ehden massacre. The attacking force (which somehow went past over dozens of Syrian army checkpoints) was met with resistance on the outskirts of Ehden where Geagea was hit. He was transported to Beirut and admitted to Hôtel-Dieu hospital in Achrafieh, Beirut where ironically he was doing his internship. His right hand was partially paralyzed and he never continued his education. Meanwhile, the military operation resulted in the murder of Tony Frangieh and his family. Geagea was later transported to a hospital in France.