The Overlanders is a 1946 Anglo-Australian Ealing Studios western adventure film. It features Chips Rafferty, John Nugent Hayward, Daphne Campbell, and Jean Blue.
It's the start of WWII in Northern Australia. The Japanese are getting close. People are evacuating and burning everything in a "scorched earth" policy. Rather than kill all their cattle, a disparate group decides to drive them overland half way across the continent.