the Legion of Honour. The Moroccan Division was initially raised as the Marching Division of Morocco. The division comprised units of varying origins and although the name would indicate otherwise, it did not in fact contain any units originating from Morocco. Moroccans were part of the Marching Regiment of the Foreign Legion which was formed from the merger of the 2nd Marching Regiment of the 1st Foreign Regiment with the 2nd Marching Regiment of the 2nd Foreign Regiment, both also part of the Moroccan Division Brigades. The division contained Tirailleurs and Zouaves, of principally Tunisian and Algerian origin, and most notably Legionnaires from the 2nd Marching Regiment of the 1st Foreign Regiment and the 7th Algerian Tirailleurs Regiment. The French Legionnaires came, as attested to by a plaque installed on the memorial, from 52 different countries and included amongst them American, Polish, Russian, Italian, Greek, German, Czechoslovakian, Swedish, Armenian, various nationals of the Jewish faith (http://monumentsmorts.univ-lille3.fr/monument/2892/givenchyengohelle-autre/), and Swiss volunteers such as writer Blaise Cendrars. In the battle, General Victor d'Urbal, commander of the French Tenth Army, sought to dislodge the Germans from the region by attacking their positions at Vimy Ridge and Notre Dame de Lorette. When the attack began on 9 May 1915, the French XXXIII Army Corps made significant territorial gains. The Moroccan Division, which was part of the XXXIII Army Corps, quickly moved through the German defences and advanced into German lines in two hours. The division managed to capture the height of the ridge, with small parties even reaching the far side of the ridge, before retreating due to a lack of reinforcements. Even after German counter-attacks, the division managed to hold a territorial gain of . The division did however suffer heavy casualties. Those killed in the battle and commemorated on the memorial include both of the division's brigade commanders, Colonels Gaston Cros and Louis Augustus Theodore Pein. Grange Subway The First World War's Western Front included an extensive system of tunnels, subways, and dugouts. The Grange Subway is a tunnel system that is approximately in length and once connected the reserve lines to the front line. This permitted soldiers to advance to the front quickly, securely, and unseen. A portion of this tunnel system is open to the public through regular guided tours provided by Canadian student guides. The Arras-Vimy sector was conducive to tunnel excavation owing to the soft, porous yet extremely stable