Wilhelm 
                    Gustloff Hospital ship
                    Launched 5 May 1937
                    
                    On 7 May 1937, The German Condor Legion Fighter Group, equipped 
                    with 
Heinkel 
                    He 51 biplanes, arrived in Spain to assist Francisco Franco's 
                    forces in the Spanish Civil War.
                    
                    
Z4 
                    Richard Beitzen Destroyer
                    Commissioned 13 May 1937
                    
                    
Latona 
                    Hospital ship
                    Commissioned 16 May 1937
                    
                    
M2 
                     Minesweeper
                    Launched 20 May 1937
                    
                    On 21 May 1937, As one of the reprisals for the attempted 
                    assassination of Italian viceroy Rodolfo Graziani, a detachment 
                    of Italian troops massacres the entire community of Debre 
                    Libanos, killing 297 monks and 23 laymen.
                    
                    
Volkswagen 
                    was founded on 28 May 1937 as the Gesellschaft zur Vorbereitung 
                    des Deutschen Volkswagens mbH (Society for the preparation 
                    of the German People's Car, abbreviated to Gezuvor) by the 
                    National Socialist Deutsche Arbeitsfront (German Labour Front). 
                    The purpose was production of a vehicle that could hold two 
                    adults and three children and be able to reach a top speed 
                    of the least 100 km/h and cost around the same price as a 
                    motorcycle at that time. The prototype would become known 
                    as the KdF-Wagen and would be one of the first for wind tunnel 
                    testing. By 1939 only 30 Volkswagen KdF-Wagens would be built 
                    before the factory would be converted to produce military 
                    vehicles to assist the German Military. This vehicle was designed 
                    by Ferdinand Porsche's consulting firm, and the company was 
                    backed by the support of Adolf 
                    Hitler
                    
                    On 29 May 1937, The Kriegsmarine pocket battleship 
Deutschland 
                    was bombed by Spanish Republican aircraft off the Spanish 
                    coast. Thirty one German sailors were killed and 101 were 
                    injured.
                    
                    
Go To: June
                    Articles: 
                    
                    
                    
                    
                    
                    
                    
                    
                    The Second Great War.
                    Edited by Sir John Hamilton
                    
                    The War Illustrated.
                    Edited by Sir John Hamilton
                    
                    2194 Days Of War.
                    ISBN-10: 086136614X
                    
                    For a complete list of 
sources