This is a table of the number of recruits for the British Army during the First World War, 1914–1918.
All recruits were volunteers until January 1916, when men were recruited under the Derby Scheme and as conscripts following the Military Service Act 1916. From July 1917, all recruits were counted as Conscripts.
References
Monthly recruiting figures for the British Army in the First World War Wikipedia(Text) CC BY-SA