Israelis Battle in Lebanon With Artillery and Jets
May 26: Israeli and Lebanese forces battle for 12 hrs on May 25 in southern Lebanon after what Israeli mil spokesman describes as 'accidental and unintentional' encounter between Lebanese soldiers and Israeli patrol; fighting began when 12-man Israeli patrol pushed 2 miles into Lebanon near village of Aita al Shaab in search of Palestinian guerrillas who might be preparing to infiltrate Israel; patrol encountered some Lebanese troops and clash developed into battle involving exchs of artillery fire and Israeli jets; Israelis asked UN Truce Supervision Orgn to advise Lebanese authorities that they did not want to fight Lebanese and that their action was against guerrillas; but shelling continued and Israelis shelled back; Israeli raid and fighting detailed; Israeli officials say 2 Israeli soldiers were killed; Lebanese Defense Min says 7 Lebanese soldiers were killed and 2 seriously wounded; says Israelis used helicopters to evacuate their wounded; Israeli C/S Lt Gen Mordechai Gur comments; map (M)