Six-Day War
At 7 a.m. local time, the Egyptian Air Force was taken by surprise by an aerial attack by the Israeli Air Force, and Operation Focus started. Israeli had been training the execution of its plan for a long time. To avoid being detected by the Egyptian radars, Israeli fighting jets flew low and kept radio silent. Because Israel's intelligence service had gathered all the crucial information over the years, all Israeli pilots knew where to find the Egyptian airfields and the exact location of each jet. That let them know which ones were the most powerful and so could become a danger to Israel. Israeli priorities were set clearly: destroy the runways so that no Egyptian jets could escape, the long-range bombers that were a threat to Israeli cities, and finally all other air force facilities. Within just thirty minutes, Egypt has already lost more than half of its air force.