Conversation so far:
How was Smuts involved in the second World War?
Smuts had served with Winston Churchill in World War I, and had developed a personal and professional rapport.
Did Smuts fight in WW2?
On 24 May 1941 Smuts was appointed a field marshal of the British Army.
What is Smuts most famous for?
Also in 1945, he was mentioned by Halvdan Koht among seven candidates that were qualified for the Nobel Prize in Peace.
Did he win the Nobel Peace Prize?
The person actually nominated was Cordell Hull.

Question: What was he nominated for?
Self-contained rewrite: What was Jan Smuts nominated for?