Erich Ludendorff
Forster was born in Fürth, Bavaria, where he attended the Humanistisches Gymnasium from 1912 to 1920. In 1923, he became a member of the SA in Fürth and observed the trial for high treason of Erich Ludendorff, Adolf Hitler and eight others, which took place between 26 February and 1 April 1924 in the court of Munich.