© Licensed to London News Pictures. 18/2/2016. Leominster, Herefordshire, UK. The battle of Verdun started on the 21st of February 1916. As a memorial to the battle, acorns from oak trees on the battle site were brought back and planted all over England. To commemorate the centenary the Woodland Trust are hoping to gather acorns from the trees and plant them. It is thought there are less than a dozen remaining trees. Pictured, the tree in Leominster next to the World War One Memorial. Photo credit : Dave Warren/LNP