January:
February:
March:
April:
May:
June: First truce
July: Security Council calls for prolongation of truce and issues indefinite cease-fire orders.  Second Truce
August:
September:UN mediator Count Bernadotte proposed new partition of Palestine, rejected by Arab League and Israel. He was murdered by Stern Gang and replaced by Ralph Bunche
October:
November: IDF expels inhabitants from villages 5-15 km inside Lebanese border, followed by expulsions from other Galilee villages. 
December: Operation Horev launched to drive Egyptians out of southern coastal strip and Negev and also Israeli troops move into Sinai until British pressure forces withdrawal.

Reference: http://www.alnakba.org/chronology/sixth.htm