This is a crowd sourcing site which has the recently released WWI documentation (diaries, etc) that can be read, tagged and categorised. You get a page, and a series of tags to mark each entry - date, time place, activity, people, etc.. It actually makes for interesting reading (if you can read the handwriting - some of which is challenging). The mundane activities of an army on the front.

Anyway, if you want to have a go, it’s a Zooniverse project, and you can find more here: http://www.operationwardiary.org