On the night of October 6, Izac and a group of American prisoners succeeded in a mass escape from the prison by cutting power and leaving the premises dressed as German guards. To avoid dogs and other pursuers, he and another American officer, Harold Buckley Willis, hiked a roundabout route to Switzerland. They traveled through the Black Forest and along the Alb, followed a rail line and crossed the Rhine River, crossing the border early in the morning of 13 October. Their path had taken them through even though a direct route from the camp to the closest Swiss border was away. They survived on raw vegetables along the way. From the crossing he was taken to the American Embassy in Bern, where he was given money by the American Red Cross to travel to Paris. From there, he was taken to London, where he met with Admiral William Sims on 23 October, and finally returned to the Bureau of Navigation, arriving on November 11, 1918, Armistice Day.