The ground was strategically important during the
First World War and was bitterly contested in a series of long and bloody engagements between the opposing French and German armies. It was the focal point of three battles: •
Battle of Arras (1914) (1–4 October 1914) – an encounter battle during the
Race to the Sea •
First Battle of Artois (17 December 1914 –13 January 1915) – part of a combined attack with the
First Battle of Champagne (20 December 1914 – 17 March 1915) •
Second Battle of Artois (9–15 May 1915) – French attack towards
Vimy Ridge •
Third Battle of Artois (25 September–15 October 1915) – also known as the Artois–Loos Offensive The Battles of Artois were as costly in French lives as the better-known
Battle of Verdun. As with numerous other sites across France, Notre Dame de Lorette became a national necropolis, sacred ground containing the graves of French and
Colonial fallen as well as an ossuary, containing the bones of those whose names were not marked. ==Cemetery and ossuary==