The husband of Irma and father of Heidi was a young officer in the Gernan Army. He was killed in WWII in Eastern Europe. He had been forced to kill a prisoner of war and on his home leave he expressed to his family that he could not live with what he had to and that he felt certain that he would not return alive once he returned to the front and that is exactly what happened.
Antje's favorite uncle because of his likeness to her father.