There , upon the urging of his cousin Georges Loinger , he joined the French Resistance .
After France 's invasion by Nazi Germany , Mangel , 16 , fled with his family to Limoges .
There , upon the urging of Mangel 's cousin Georges Loinger , Mangel joined the French Resistance .
After France 's invasion by Nazi Germany , Mangel , 16 , fled with his family to Limoges .