Over four decades after the 1973 war that saw Egyptian forces seize of the Sinai Peninsula from occupying Israeli forces in a shock offensive, the legacy of the brief conflict lives on. One of the tales of the war known by some Egyptians is the existence of a “secret code” used by the Egyptian army that Israeli intelligence was unable to crack. The cypher was simple yet unorthodox: using an unwritten language from one of Egypt’s ethnic minorities, the Nubians. With the system, words and commands that would have been undecipherable to even a veteran Israeli intelligence officer could be...