Tanks in the Israeli Army one another in the 1967 and 1973 Arab-Israeli wars. Some feel the reason that Israeli Centurions defeated the Arab T-55's and even T-62's is because the Centurion has good sights and the Arab tanks were downgrades of the original design, as the T-55 used by the Soviet and Warsaw pact Armies had 200mm armor thickness while T-55's sold to the Arabs had only 120mm frontal armor and mediocre side and rear armor. M22 Locust – An American-designed airmobile light tank M4 Sherman – (Medium Tank, M4) Centurion tank (A41) –British main battle tank of the post-World War II period. Israel
US signals intelligence in the Cold War continuing the World War II legacy. President Harry Truman, on 24 October 1952, issued a directive that set the stage for the National Security Agency, whose scope went beyond the pure military. NSA was created on 4 November 1952. Air Force SIGINT, by the Air Force Security Service, supported numerous Korean War operations. They often gave early warning of bombing attacks or ambushes for fighter aircraft. Since the North Koreans operated under Soviet doctrine, with strict ground control, the ground-controlled interception communications were especially vulnerable. North Korean orders to bombing units might well be intercepted and processed in the US