ABSTRACT
Patrick O’Leary, alias Albert Guérisse, having been landed near Port-Vendres on 18 April 1942 from Tarana in one of the first operations carried out under CWF auspices, set up one of the largest and most effective of MI9’s wartime organisations for rescuing escaped prisoners of war and shot-down airmen who had evaded capture. The so-called ‘PAT Line’ had built on foundations laid by Ian Garrow at Marseilles and, by the autumn of 1942, its ramifications stretched up into the Pas-de-Calais and Belgium as well as into Brittany, which of course harboured many evaders.1
