 As the war turned into a trenches war with the front established to the east near Ypres, some 30 km away, Ledringhem served as a resting and training place ("billet") to the rear.French 12th cuirassiers were there in December 1914-September 1915, British horse-riding 20th Hussars 7 May 1915, the 75th Brigade RFA in May–June 1916, the 1st Royal Marine Battalion from 14 to 22 November 1917, French 114ème Régiment d'Artillerie Lourde and 15e Régiment de Dragons in May 1918, and 2e Régiment d'Artillerie de Campagne in August 1918.These French troops are then replaced (26–28 June 1918) by English men of the 187th and 190th brigades of the 41st division (2e RAC JMO 26N906-23, 27 & 31).