On May 15, 1948, the day the British Mandate over Palestine ended, the armies of five neighboring Arab states invaded the new State of Israel, which had declared its independence the previous day. The invasion, heralded by an Egyptian air attack on Tel Aviv, was vigorously resisted. From the north, east and south came the armies of Lebanon, Syria, Iraq, Transjordan, and Egypt.
The invading forces were fully equipped with the standard weapons of a regular army of the time – artillery, tanks, armored cars and personnel carriers, in addition to machine guns, mortars and the usual small arms in great quantities, and full supplies of ammunition, oil, and gasoline. Further, Egypt, Iraq, and Syria had air forces. As sovereign states, they had no difficulty (as had the pre-state Jewish defense force) in securing whatever armaments they needed through normal channels from Britain and other friendly powers.