During that same month, they were heavily committed in the battles for the Mount Lebanon region, East Beirut, the Matn District and the Aley District against the Lebanese National Movement/Joint Forces' (LNM-JF) and Lebanese Arab Army's (LAA) "Spring offensive", being frequently employed as a "fire brigade" to fill gaps at the front, notably at Achrafieh, Tayyouneh-Lourdes, Kahale, Sin el Fil, and Ayoun es-Simane to name but a few, sustaining heavy casualties in the process. Integrated into the Lebanese Forces in 1977, "Tanzim"'s militiamen later again played a key role in the eviction of the Syrian Army out from the Christian-controlled East Beirut in February 1978 during the Hundred Days' War, where they manned the Fayadieh-Yarze sector of the Green Line.