John Laffin was a professional journalist and a teacher of English and history in secondary schools.

More:

http://www.johndclare.net/wwi3_laffin_polemic.htm

The easily accessible review by "top cat1980" at Amazon.com is also informative:

http://www.amazon.com/British-Butchers-Bunglers-World-War/product-reviews/B000TYWJ60/ref=cm_cr_pr_hist_1?ie=UTF8&filterBy=addOne