Since July 4 1918, the United States of America and Australia have never fought a major war without each other.

It’s one of the longest alliances in modern history.

The relationship has not always been easy or even. Both countries have changed dramatically since 1918 when they first fought together at Hamel on the Western Front. The scale of US power has transformed the world. However, this friendship, forged in battle, shaped also by deep exchanges of ideas, art, people and trade, is a fascinating story of trust, difference, loyalty and respect what Australians would call mateship.

Hosted by respected journalist and broadcaster Mike Munro, the program explores through key places, periods and personal ties, the history of the US-Australian relationship. Mike Munro encounters people and places that bring the past to life, even revealing some of his own experiences as a young journalist in Australia during the tumultuous Vietnam War.

Mike Munro joined Kayley Harris to talk about the program which will go to air 7:30pm Wednesday July 4 on History Channel

Download this podcast here