GREAT BRITAIN: Sergeant Thomas Green_ the first police officer to be killed in a riot in 20th Century Britain. SHOCKING photographs showing the devastating damage to Britain???s cobbled streets following the now forgotten communist riots of 1919 have been released in a new book. In other images the towering HMS Valiant ??" one of the most formidable battleships of its time ??" can be seen moored in the Mersey, Liverpool, as-well-as newly invented tanks on the streets deployed against British trade unionist and Communist crowds. The black and white images transport us back in time to when post-WW1 fury sparked revolution across Britain, which saw up to half-a-million workers striking at any given time, and because police were also on strike at times, the armed forces had to be bought in to restore order. It is not known how many people died as a result of the fighting. The book is entitled ???1919 Britain???s Year of Revolution??? by Simon Webb, and is published by Pen and Sword History.