This carving is a replica, the exact size as the original that was carved into the chalk walls of the Souterrain (tunnels) under the approaches to Vimy Ridge. Canadian troops were kept hidden in the souterrain for the month prior to the attack on Vimy Ridge on 09 April 1917.  Hundreds, perhaps thousands, of carvings and drawings are on the walls of the souterrain and those of the 15th Battalion are amongst the best. The replica was made from a laser scan of the original then printed on a 3-D printer.

77711 LCpl Oscar Green came to the 15th Battalion, No. 2 Company in May 1915 as reinforcement from the 30th Battalion (British Columbia). He was wounded in the right arm in 1915, suffered shell shock after being buried alive in a trench ay the Somme in 1916 and was at Vimy Ridge in April 1917 when he carved this badge in the walls of the souterrain prior to the battle. He was killed at Hill 70 on 15 August 1917 when single-handedly he attacked a German fighting patrol that was approaching Battalion Headquarters unobserved. He is buried in Bethune Cemetery, France.