The Egyptians were able to achieve strategic surprise against Israel in the 1973 Yom Kippur War through effective military preparations and deception. They had been conducting large training exercises for years, allowing Israel to grow complacent. Additionally, Egypt launched an deception campaign involving limiting information sharing and presenting their final mobilization as another routine exercise. Through these measures, Egypt was able to cross the Suez Canal before Israel realized war was imminent, gaining an early advantage through surprise.