During the period of the Popular Front, Kriegel became a militant head of the trade union in the insurance sector, head of organisation in the insurance sector of CGT and he was also active in the MJCF.
Kriegel became a militant head of the trade union in the insurance sector in the insurance sector of CGT. This was during the period of the Popular Front. The insurance sector was head of organisation. He was also active in the MJCF. This was during the period of the Popular Front.