Wittig joined the Communist Party of Germany ( KPD ) at the age of fifteen , in December 1945 .
Was active in Free German Youth ( FDJ ) , a youth political movement , from its foundation the following year .
Wittig joined the Communist Party of Germany ( KPD ) at the age of fifteen , in December 1945 , and was active in Free German Youth ( FDJ ) , a youth political movement , from its foundation the following year .