The Afghanistan war logs series of reports on the war in Afghanistan published by the Guardian is based on the US military's internal logs of the conflict between January 2004 and December 2009. The material, largely classified by the US as secret, was obtained by the whistleblower website Wikileaks, which has published the full archive. The Guardian, along with the New York Times and the German weekly Der Spiegel, was given access to the logs before publication to verify their authenticity and assess their significance.
A team of investigative reporters, regional specialists and database experts spent weeks combing the data for matters of public interest. After establishing the meaning of more than 400 abbreviations and military acronyms they were able to authenticate the logs by comparing them with other records and cross-checking with other sources.