The BBC put Sheffield and Hastings on their international list of "ten leading historians" of WW1.
http://www.bbc.co.uk/news/magazine-26048324

From quote above,"Professor Sheffield said mainstream historians had been revising their opinions of the conflict over the past three decades overturning the "bad war" theory which had taken hold in the 1930s."

You people are clinging to old, discredited myths.