Egypt and Syria attacked Israel in October 1973 (on Yom Kippur); Israel counterattacked and drove the Syrians back and crossed the Suez Canal into Egypt
When one looks at Israeli history, the two wars that changed and defined the country the most were the Six Day War of 1967 and the YomKippur War of 1973.
FORBES: The Ghost Of Yom Kippur, Israel's Pearl Harbor