Soldiers are being asked to ponder this question: Is a badge on Foursquare worth your life? The question was posed by Brittany Brown, social media manager of the Online and Social Media Division at the Office of the Chief of Public Affairs. The US Army also warned against anyone using geotagging, not just soldiers, saying it really does expose anyone who uses it. The British Army has banned the use of mobile phones in operational zones such as Afghanistan and cautions soldiers against taking pictures on smartphones.”]
Source: https://nakedsecurity.sophos.com/2012/03/14/us-army-warns-about-the-risks-of-geotagging/