This is Nissan's oldest Rally effort that I've seen so far. 1958 in fact.
The effort was evidently Datsun's re-entry into motorsports after WWII. The vehicles used were two Datsun 210s and it circumnavigated the entire Australian continent.
Though they only wanted to finish the event the Datsun's won their class and took home a fourth woth both vehicles finishing. The video and pictures in the article are great and the bare bones vehicles are a far cry from the plush rides we race today.