In 1933 Trollmann defeated Adolf Witt and in fact he had just become the national champion of the heavyweight. The Nazi judge, however, revoked his title, which he was later entrusted with following protests throughout Germany. Eight days later, instead, the German federation accused him of unsportsmanlike conduct and did not consider the match valid: it organized another match between Trollmann and Gustav Eder, heavyweight champion. In protest, Johann put flour on himself, dyed his hair blond (making fun of the Aryan ideal) and spontaneously lost.
In 1941 he was sent to Neuengamme concentration camp.
Three years later he will be recognized by former amateur boxer, Emil Cornelius, who will challenge him. Trollmann lands him in the middle of the second round,
by signing his death warrant:
Cornelius is in fact a kapo, a prisoner in charge of controlling others. Three days later, the boxer will be killed by shoveling or gunshot by Cornelius.
Ah: In 2003 Berlin named him mid-sized champion again by handing over the crown to his daughter Rita Vowe-Trollmann.