Charles Lachman, author of "Codename Nemo: The Hunt for a Nazi U-Boat and the Elusive Enigma Machine," joins "Morning in America" to discuss how Allied troops communicated in code to complete a mission during World War II. #Nazi #Navy #OperationNemo Start your day with "Morning in America," NewsNation's live three-hour national morning newscast hosted by Markie Martin. Weekdays starting at 6a/5C. #MorningInAmerica NewsNation is your source for fact-based, unbiased news for all America. More from NewsNation: newsnationnow.com Get our app: trib.al/TBXgYpp Find us on cable: trib.al/YDOpGyG How to watch on TV or streaming: trib.al/Vu0Ikij