In 1975–77 the PLA was a predominantly infantry force, loosely organized into company- or battalion-sized formations provided with light weapons drawn from PLO stocks or pilfered from LAF and ISF barracks. After suffering casualties during the Israeli invasion of Lebanon of June 1982, the PLA was quietly re-organized that year by Walid Jumblatt, who turned it into a disciplined fighting force provided with Soviet-made armoured vehicles, field guns, Howitzers and MBRLs.