SZT5182194: Mercedes Kompressor limousine, 1928 / Bridgeman Images

SZT5182203: Opel Olympia, 1938 / Bridgeman Images

SZT5182215: Opel 1,2 litre Cabriolet, 1932 / Bridgeman Images

SZT5182224: Opel 10/12 PS, 1920 / Bridgeman Images

SZT5182472: Heavy cruiser "Deutschland" off Wilhelmshaven, 1937 / Bridgeman Images

SZT5182502: Anti-aircraft unit of the Condor Legion in Spain, 1939 / Bridgeman Images

SZT5182517: Officer candidates in the Spanish Civil War, Spain, 1936-39 / Bridgeman Images

SZT5182529: Command post of the Condor Legion at Toledo, 1939 / Bridgeman Images

SZT5182601: Parade of the Condor Legion in Burgos, Spain, 1939 / Bridgeman Images

SZT5182643: Parade of the Condor Legion in Berlin, 1939 / Bridgeman Images

SZT5182148: Adler Diplomat, 1934 / Bridgeman Images

SZT5182151: Adler Trumpf, 1933 / Bridgeman Images

SZT5182163: Mercedes Benz 170 H (W28), 1936 / Bridgeman Images

SZT5182187: Mercedes W23 Heckmotorwagen (rear engine car), 1934 / Bridgeman Images

SZT5182486: Fire fighting operations on deck of the heavy cruiser "Deutschland" in Ibiza, 1937 / Bridgeman Images

SZT5182498: Sir William Morris, 1929 / Bridgeman Images

SZT5182516: Rolls Royce Phantom, 1929 / Bridgeman Images

SZT5182585: Pilot of the Condor Legion in conversation with the ground personnel, Spain, 1939 / Bridgeman Images

SZT5182588: Transport of the wounded at the Condor Legion, Spain, 1936-39 / Bridgeman Images

SZT5182603: Victory parade of the Condor Legion in Madrid, Spain, 1939 / Bridgeman Images

SZT5182612: German self-propelled gun on the Eastern Front, 1942 / Bridgeman Images

SZT5182621: Lourenco Marques in Mozambique, around 1900 / Bridgeman Images

SZT5182624: Entry of Spanish troops into a village near Toledo, Spain, 1939 / Bridgeman Images

SZT5182630: Camp of the Condor Legion in Doeberitz near Berlin, 1939 / Bridgeman Images

SZT5182655: State ceremony for the Condor Legion in the Lustgarten (Pleasure Garden), Berlin, 1939 / Bridgeman Images

SZT5182658: Camp of the Condor Legion in Doeberitz near Berlin, 1939 / Bridgeman Images

SZT5182667: The beach of Lourenco Marques in Mozambique, around 1900 / Bridgeman Images

SZT5182682: Dr. Church's steam carriage, 1835, Cooke, John (fl.1833) (after) / Bridgeman Images

SZT5182712: Steam powered threshing machine, around 1850 / Bridgeman Images

SZT5182727: Steam truck, 1902 / Bridgeman Images

SZT5182787: Fascists in Zaragoza, 1936 / Bridgeman Images

SZT5182790: Troops marching through a Spanish village, 1936 / Bridgeman Images

SZT5182811: Caricature of the Spanish Civil War by Wyndham Robinson, 1936 / Bridgeman Images

SZT5182817: Spanish national troops traveling to the front, 1936 / Bridgeman Images

SZT5182832: Spanish national fighters in Spain, 1936 / Bridgeman Images

SZT5182835: View from the airport in Salamanca, 1939 / Bridgeman Images