Organiser Pauline Wilson said the event was an opportunity for people to understand what our soldiers experienced.
"Even if [people] just have a little bit of insight into what our troops might have gone through and what the camps would have been like," Mrs Wilson said.
"[It's] a bit of appreciation and respect ... so that we can have the life that we have now."
It was also a chance to educate children about our history.
"The kids love it and they do wind up knowing a fair bit," she said.
Mrs Wilson and her husband Robin plan to procure a World War I tank, a Land Rover from the Vietnam War, and artillery guns, as well as other equipment.
Some of the vehicles will be available for rides, for a gold coin donation.
Exhibits from the Featherston Mainly Military museum will also be on display.
Most of the gear would be genuine, Mrs Wilson said.
Mr Wilson, who is a member of the Army Reserve, said some veterans found it a moving experience to see their old weapons again.
"A lot of the veterans get quite emotional about how accurate the equipment is."
His own passion for all things military was due in part to his great-grandfather and grandfather serving in World War I and II respectively.
"I've always had a passion for military history."
If successful, the group hopes to make the Eketahuna event an annual one.
Food stalls will be operating, camouflage face-painting will be available and various army uniforms able to be tried on.
Entry is by gold coin donation and all proceeds will go towards supporting the Eketahuna swimming pool.
The day kicks off at 10am and finishes at 4pm.
-If you are interested in running a food stall, contact Pauline Wilson on 021 1172511.
