Escape and evasion map printed on playing cards distributed to Prisoners of War which could be soaked and pealed apart revealing the escape map. Many of the maps of the Pacific region were printed by the US Army Map Service, while the UK was responsible for many of the European Theatre maps. Many of the US Navy charts were folded in envelopes and distributed to the air crews before a mission, and to be turned in when the mission was successfully completed. They were called "drift charts" by the Navy, "...since their prime purpose was to indicate to aircrews survivors in their life rafts
Recruitment to the British Army during the First World War only telling counterargument the government could offer was absolute necessity. Workers must be convinced that there were too few volunteers to meet the need, so they would lose the war, which would mean the end of Britain; army leaders should convince union leaders by laying out the military facts. The Derby Scheme was launched in autumn 1915 by the Earl of Derby, by then Kitchener's new Director General of Recruiting, to determine whether British manpower goals could be met by volunteers or if conscription was necessary. Each eligible man aged 18 to 41 who was not in a "starred" (essential)