Article: In 1970, President Nasser died and was succeeded by Anwar Sadat. Sadat switched Egypt's Cold War allegiance from the Soviet Union to the United States, expelling Soviet advisors in 1972. He launched the Infitah economic reform policy, while clamping down on religious and secular opposition. In 1973, Egypt, along with Syria, launched the October War, a surprise attack to regain part of the Sinai territory Israel had captured 6 years earlier. it presented Sadat with a victory that allowed him to regain the Sinai later in return for peace with Israel.

Question: What was the October War?
surprise attack to regain part of the Sinai territory Israel had captured 6 years earlier