"The Years Between". a collection of poems written during the period from just after the Boer War till the aftermath of World War I, was originally published in 1919. It was the first volume of new poems by Kipling published since "The Five Nations" in 1903; including the first book appearance of Kipling's celebrated "The Female of the Species". with its awed refrain "The female of the species is more deadly than the male". and "For All We Have and Are". as well as some poems of the Great War.