Operation War Diary

Operation War Diary, a British historical crowdsourcing project, is now online,With the cooperation of The National Archives, the IWM (Imperial War Museum) and "citizen historians" through the Zooniverse community pages from British WW1 war diaries are being classified and tagged for significant content.

There are 95 diaries available with from less than 10 to over 800 pages each. Although only just opened for input rapid progress is being made on some of the diaries.

You may also be interested in the UK Lives of the First World War project.