Which town in northern France was the site of a major battle in November- December 1917?

Cambrai is a commune in the Nord department and in the Hauts-de-France region of France on the Scheldt river, which is known locally as the Escaut river.

Cambrai was the Duke of Wellington's headquarters, for the British Army of Occupation, from 1815 to 1818. Occupied and partly destroyed by the German army during World War I, Cambrai saw unfold in its vicinity the Battle of Cambrai (20 November 1917 – 3 December 1917) where tanks were massively and successfully used for the first time. A second Battle of Cambrai took place between 8 and 10 October 1918 as part of the Hundred Days Offensive.