Japanese Never Knew U S Navy Codebreakers Cracked Their JN 25 Naval Code by Midway

#JN25 #BattleOfMidway #WW2Intelligence Discover the untold story of how U.S. Navy codebreakers partially penetrated Japan’s JN-25 operational code and gave Admiral Chester Nimitz a decisive intelligence advantage before the Battle of Midway in June 1942. Working under Commander Joseph Rochefort at Station HYPO in Pearl Harbor, a small team of cryptanalysts combined intercepted messages, traffic analysis, recovered code groups, and electromechanical tabulating equipment to reconstruct Japan’s secret plans. Learn how references to a mysterious objective called “AF” led Rochefort’s team to suspect Midway. To prove it, the American garrison broadcast a false report that the island’s water system had failed. Japanese communications soon reported that “AF” was short of water, confirming the target and allowing the U.S. Pacific Fleet to prepare an ambush. This detailed documentary explores how intelligence helped American carrier aircraft sink four Japanese carriers and reverse the momentum of the Pacific War. It also examines the continuing struggle against later versions of JN-25 and the intercepted itinerary that enabled American fighters to locate Admiral Isoroku Yamamoto in 1943. Through declassified records and firsthand accounts, discover how patience, mathematics, deception, and human judgment transformed fragments of enemy radio traffic into one of history’s most important intelligence victories.