Around 300,000 pages of First World War unit diaries have been digitised, in order to preserve the documents for future generations.br br A series of First World War diaries from British and colonial units serving between 1914 and 1922 have been digitsed on to the National Archives' website. br br The diaries contain daily reports on operations, intelligence summaries and other pertinent material from the time. br br National Archives' military records specialist, William Spencer, explained why one of the most requested series in their Kew reading room had finaly made it onto the web. br br "The original records have been available for 45 years and consequently they are very popular, they're very heavily used and they're very tired," Mr Spencer said. br br "So we have digitised the diaries for two reasons: one to preserve for future generations, secondly to make the material available online so you dont have to come to us at Kew to look at the material, you can be any where in the world."br br Get the latest headlines br Subscribe to The Telegraph br Like us on Facebook Follow us on Twitter Follow us on Google+ br Telegraph.co.uk and YouTube.comTelegraphTV are websites of The Daily Telegraph, the UK's best-selling quality daily newspaper providing news and analysis on UK and world events, business, sport, lifestyle and culture.