May 16th, 1939 (TUESDAY)
UNITED KINGDOM: The prototype Vickers Wellington Mk III (L 4251) heavy bomber makes its first flight today. (22)
GERMANY: Kriegsmarine warships conclude naval manouvers. They include Graf Spee along with Panzerschiffe Deutschland, Panzerschiffe Admiral Scheer, Kruizer Leipzig, Kruizer Koln, a Zerstorer, a U-boat tender, and various submarine flotillas. Made port at Ceuta and Lisbon.