170419-N-VA474-622 WASHINGTON (April 19, 2017) The National Museum of the U.S. Navy welcomed on 18 April 2017, the arrival of a four-rotor Enigma machine from the Cryptologic Command Display in Pensacola, Fla. The Enigma is on loan to be featured at the museum in 2018 during the commemoration of the 75th anniversary of World War II. German Naval traffic began transmitting on 1 February 1943 over a four-rotor Enigma. NMUSN currently has on display a three-rotor Enigma, the type used prior to February 1942 for German Naval message encryption. While the specific machine being lent is one which was used for communications between Germany and Japan, this style of machine influenced the fate of U.S. naval vessels during the majority of the Navy's involvement in World War II. (U.S. Navy photo by Moneé Cottman/released)