Conversation so far:
Why was Donovan so involved in the trials?
CANNOTANSWER.
What was Donovan's involvement in World War 1?
During World War I, Major Donovan led the 1st battalion, 165th Regiment of the 42nd Division.
Did he witness firsthand the crimes that were prosecuted in Nurenburg?
CANNOTANSWER.
Was he proud of his role in the armed services?
He also was awarded the Distinguished Service Cross for leading an assault during the Aisne-Marne campaign.
Did he have a family?
his wife.

Question: How old was he when he retired?
Self-contained rewrite: How old was William J. Donovan when he retired?