In Operation Peace for Galilee, which later became known as the First Lebanon War, Golani's 51st Battalion fought in the vicinity of Nabatieh, and on June 6, 1982, the reconnaissance unit assaulted the PLO-held Beaufort Castle. The 12th Battalion was subordinated to the Barak Armored Brigade, with a planned thrust along the Lebanese coastal strip to Tyre. This force captured the villages Doha and Kafr Sil on June 9–10, 1982, on the outskirts of Beirut. The brigade also took part in the Siege of Beirut, where its units were present until the end of the war in September 1982.