It is little known today that, in January 1939, the IRA launched a bombing campaign, codenamed The S - or Sabotage - Plan on mainland England. With cynical self-justification, they announced that it was not their intention to harm human life but in just over a year, more than 300 explosive devices resulted in 10 deaths, 96 injuries and widespread devastation. London, Birmingham, Manchester, Liverpool and many other towns and cities were targeted.
On...