He served in several political roles in the Soviet occupation zone of Germany from 1946 until his arrest and imprisonment in 1950.

Brundert worked as a tax lawyer at an auditing firm in Berlin for some time.

[1][2] He was a part of the Nazi resistance group the Kreisau Circle, before being drafted into the Germany navy.

[5] As a professor, Brundert dedicated himself to the effect on the Two-Year-Plan on business law, among other things.

In November 1949, he was arrested, and in April 1950 sentenced to 15 years imprisonment for "economic sabotage and social-democratic activities".

[7][8] After 7 years, which were overwhelmingly spent in solitary confinement, Brundert was released, after which he moved to Hesse in West Germany.