Confirming the camp site would be listed as of February 26, Heritage New Zealand intends to publicly notify its decision and will be making recommendations to South Wairarapa District Council " to ensure the long-term conservation of this place".
"It is also desirable that Sec 575 Featherston SBRN, Wellington Land District, is acquired and set aside as a war memorial site of national significance with provision for on-going maintenance and interpretive signs."
Summarising its decision to allot a Category 1 listing to the camp site, Heritage New Zealand said the construction of the military training camp was an undertaking "unparalleled anywhere in Australasia" and its scale embodied the extent of the country's commitment to fight in an overseas war.
The camp was a dominant feature in Wairarapa between 1916 and 1918 when more than 60,000 men passed through it before seeing active service.
During World War II, a prison camp for Japanese prisoners was set up there and, in 1943, during a riot 48 of them, alongside a New Zealand soldier, were killed.
The site's archaeological significance was recognised back in 2011 when parts of the camp were declared as being archaeologically important, but this week's move goes much further by giving the entire site the highest category value available from Heritage New Zealand.