100 years ago today, the worst rail disaster in British history occurred at Quintinshill near Gretna Green in Dumfriesshire, Scotland. On May 22nd 1915, a devastating crash involving a total of five trains, killed 226 people and injured a further 246. The vast majority of those killed were territorial soldiers of the 1/7th (Leith) Battalion, Royal Scots, on their way to participate in the Gallipoli campaign. Disaster stuck when a troop train headed for Liverpool struck a passenger train that …