5929221 A tank towing a heavy artillery piece, 29 November 1917 (b/w photo) by Unknown photographer, (20th century); National Army Museum, London; (add.info.: A tank towing a heavy artillery piece, 29 November 1917. Photograph, World War One, Western Front (1914-1918), 1917. A crowd of soldiers gather to watch a tank of C Battalion, Tank Corps, towing a captured German 15 cm naval gun on the Marcoing Road in a wood east of Ribecourt. The gun was captured during the Battle of Cambrai (1917). One of seven photographs relating to the Royal Tank Corps, Cambrai, 1917.); by National Army Museum ; out of copyright.