Hidden in the fog, invisible to straining eyes, the Regimental Sergeant-Major's voice is easily audible as he calls the pace for the final stint to the summit.
Tidy, regimented and showing no sign of the effects of a four-hour walk, the 250 marchers recreating the march of thousands of WWI soldiers a century ago reached the summit of Rimutaka Hill Rd exactly on 7am.
Among them were 30 soldiers dressed in WWI replica uniforms and weapons supplied by WingNut Films, plus a squad of soldiers from 1 Brigade, Linton Army Camp.
The parade had begun at 3am in Featherston under clear night skies and no wind, with police, military police and New Zealand Transport Agency personnel keeping a tight eye on the procession as it headed up SH2.
The Rimutaka Crossing Re-enactment Group chair Robert "Tweet" Bird, dressed as an army major, led the procession, with Masterton's Jack Hayes keeping a close watch as the RSM.
A Masterton busload of supporters, some dressed in period costume, were on hand to greet the marchers and get breakfast and hot drinks ready, with the help of 1 Brigade, but formalities came first.
With the marchers and soldiers formed up within the summit carpark, Masterton's Mike Kawana lead a karakia, before South Wariarapa mayor Adrienne Staples addressed the audience.
Mrs Staples, who had marched from Featherston, acknowledged the presence of Upper Hutt mayor Wayne Guppy, saying she was technically on "his" ground, and praised the 18 months of planning that led to the march.
"We have made it, we are here at the summit, just as many thousands of men have been.
"For many, it would have been their last journey.
"Taking part in this march is honouring the sacrifice they made."
Guest speaker Lieutenant General Rhys Jones, former Chief of Defence Force, asked the audience why the army had a habit of early morning starts.
"Most physical hardships can be overcome by physical determination," he said.
"To march from camp, that was to show we can do it.
"No physical challenge was not surmountable.
"It demonstrates the challenge that nations often have to overcome."
The ceremony's high point was the unveiling of a 3m-high monument in stone and ironwork, dedicated to the soldiers who endured the crossing -- and the war.
Beside the memorial, with a catafalque guard from the 2nd Engineer Regiment, a flag was lowered and raised again to a bugler's Last Post and the Ode.