"Records show that nine local men were killed during the battle, with most casualties on August 8 when the fighting was fiercest," Mr Shadbolt says. "In addition, Lt Col Conrad Saxby, a farmer from Opotiki, was the first Commanding Officer of the Maori Pioneer battalion when it was formed in France, after Gallipoli."
Chunuk Bair is also important because it is likely the first time a haka was performed on a European battlefield.
"It is now known that the haka performed was Ka Mate," says Mr Shadbolt. "We also know that the troops on the beach could hear the haka being performed as each successively higher trench was captured and the New Zealand soldiers advanced on the summit. In total, around 900 New Zealanders died fighting for Chunuk Bair, and to put that in perspective that would have been about the population of Whakatane at that time.
"August was the month in which most of our soldiers died, and it is arguable that the 8 of August should be our national day rather than in April on Anzac day."
The battle will also be commemorated in Opotiki at the Cenotaph at 2.30pm on Saturday. The public is welcome to attend.