Ronneberg was the leader of the Norwegian commandos who destroyed the heavy water plant at Telemark in February, 1943, dealing a blow to the Nazi nuclear program. He died this week at 99.
All nine of the men who were part of that mission had trouble adapting to civilian life after the war:
It was very hard on them, almost to a man. They had lived underground under constant threat for years on end, many of them in isolation. So, when the war ended, it was tough on them. They took it in different ways. Some went to the woods and found solace there; Knut Haugland joined the Kon Tiki expedition, lived on a raft, and found peace there. Others found it in drinking; and others never found it. The sacrifices they made and the hardships they endured affected them for the rest of their lives.