YOU can expect to see crew members from the Danger Close production moving about the paulownia plantation near Wooroolin as early as Monday.
They will prepare the site ahead of full-scale filming which is due to start on May 15 and run for about two weeks.
Danger Close producer Martin Walsh said he would film most of the large-scale battle scenes in Wooroolin.
The cast and crew were in Wooroolin and Kingaroy on Tuesday and Wednesday to meet a handful of veterans who fought in the battle.
Actor Travis Fimmel spent time with Lt Col Harry Smith, the infantry commander who led Australian and New Zealand soldiers through the chaos of Long Tan.
It was the first time the pair had met and Mr Walsh said Fimmel was the right choice to play Lt Col Smith.
"He is such a brilliant actor, he's got a quiet fierceness," he said.
"Take Travis's King Ragnar Lothbrok character, (from Vikings); when he needed to be fierce he was fierce but when he needed to be content and diplomatic and professional he can do that too."
The battle and the men that fought it were a familiar subject for Mr Walsh.
He produced a documentary detailing the battle for Foxtel in 2006 but he said the feature film will would be a significant challenge.
"The way that we describe it is, a documentary is a photography but a movie is a painting," he said.