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
British Army uniform and equipment in World War I more Mk IV revolvers in service in 1914, as the initial order for 20,000 Mk V revolvers had not been completed when hostilities began. On 24 May 1915, the Webley Mk VI was adopted as the standard sidearm for British troops and remained so for the duration of World War I, being issued to officers, airmen, naval crews, boarding parties, trench raiders, machine-gun teams, and tank crews. The Mk VI proved to be a very reliable and hardy weapon, well suited to the mud and adverse conditions of trench warfare, and several accessories were developed for the Mk VI, including