In the 1982 Lebanon War where Israel invaded up to Beirut, Syria intervened on the side of Lebanon and the PLO forces residing there. Israeli jets shot down between 82[18] and 86 Syrian aircraft in aerial combat, without losses.[19][20] A single Israeli A-4 Skyhawk and two helicopters were shot down by anti-aircraft fire and SAM missiles.[18][19][20] This was the largest aerial combat battle of the jet age with over 150 fighters from both sides engaged.