Prime Minister Malcolm Turnbull has been asked to declare a national day to commemorate the enormous loss of Australian lives at a First World War battle in France.
WA Premier Mark McGowan says July 23 should be known as Pozieres Day to mark the start of a seven-week battle that killed 23,000 Australians, with historian Charles Bean describing the site as "more densely sown with Australian sacrifice than any other place on earth".
By comparison, 8,000 Australians lost their lives at Gallipoli, from a total of 26,000 casualties over eight months of fighting.
"I wrote to him (Malcolm Turnbull) a few weeks ago and hope to hear back from him relatively quickly. This is one the Commonwealth could embrace," Mr McGowan told reporters in Fremantle on Sunday.
Premier McGowan said it would be fitting to begin a Pozieres day tradition next year, marking 100 years since the end of World War 1.

Western Australian Premier Mark McGowan says July 23 should be known as 'Pozieres Day' to mark the start of a seven-week battle in France during WWI Source: AAP
"It doesn't cost anything, but it does acknowledge a part of our war history that was above and beyond anything else that we've ever been through in the history of this country in terms of young lives lost," he said.