After Adolf Hitler's rise to power in 1933, Charles Bettelheim broke away from his familiar environment, first joining the "Young Communists" (Jeunesses communistes), and subsequently the French Communist Party.
1933年阿道夫·希特勒上台后 ，夏尔·贝特兰离开他熟悉的环境，首先加入“共产主义青年”（Jeunesses communistes），随后加入法国共产党。