Australian Prime Minister Malcolm Turnbull and French Prime Minister Edouard Philippe have opened the Sir John Monash Centre, a museum paying tribute to the men and women of World War I in Villers-Bretonneux in France.

French Prime Minister Edouard Philippe delivered a heartfelt speech saying the Australian soldiers defended the French land inch-by-inch, "as if it were their own country".

"We will never forget that 100 years ago, a young and brave nation on the other side of the world made history by writing our historyā€¯, he said.