German technicians inspect a large machine cylinder inside a German Aeronautical materials testing laboratory, pre World War 2. An engine being lowered on the altitude test bench. Technicians inspect various gauges. Gauges measuring air pressure while testing an engine.
A materials testing laboratory in Germany, before World War 2. Technicians working on aerodynamic research for aircraft applications inside laboratory. A scientist subjects a test rod into a machine. Technician reading gauges and speedometers. A test rod breaks during test. Machine tests the strength of metal.
German Aeronautical technicians working at a aircraft materials testing laboratory in Germany, before World War 2. A pair of technicians use a fluoroscope on metal. The fluoroscope showing stress pattern in piece of material bed tested. A sheet metal being strain tested by scientists. A technician pulls chains. Sheet material shattering with characteristic diagonal folds.
Explosion from bombing during the Marco Polo Bridge Incident at the start of the Second Sino-Japanese War. Sign at Marco Polo Bridge reads “Lu Know Kiao”. A train station near Marco Polo Bridge in Fengtai District, Peking, China. Imperial Japanese Army soldier uses binoculars while hiding in trench. A Japanese Sumida M.2593 (Type 91) armored car. Japanese troops fighting around Marco Polo bridge. The Japanese flag on mast of a battleship. Japanese battleship sailing to China. Japanese troops enter Nanking (Nanjing) after the Battle of Nanking. Soldiers in back of truck. Japanese biplane aircraft in flight. Japanese planes drop propaganda leaflets over Shanghai. Japanese planes dropping bombs. A Japanese newspaper with news on the Second Sino-Japanese War. Naval artillery crew firing guns. Japanese warships firing their guns in China. Japanese soldiers advance in battle. More bombers in flight.
American singer, comedian and actor Al Jolson entertains patients and members of the hospital staff at Tokyo General Hospital. Patients and staff seated on the lawn. Jolson stands at the microphone and performs his act. Man plays piano in the background. Convalescents seated on lawn and on balconies. Soldiers in wheel chairs, and the staff applaud. People click photographs.
Wounded U.S. soldiers evacuated in Tokyo. Wounded on stretchers being removed from a United States Army Air Forces C-54 Skymaster aircraft. They are placed in military ambulances. Patients in the vehicle. Several medics get into the ambulances, doors are closed. Military bus ambulance pulling out with patients. Two soldiers lift a stretcher with a wounded man. He is carried to the ramp. Two soldiers carry a wounded man on stretcher along the ramp
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