The owner of a business dealing in high-tech products for automated homes, Thomas sees the irony in his interest and describes it tongue-in-cheek as "a hobby in the past, with a job in the future because I can't stand the present".
"We provide all our own gear from our own collections. Everything from weapons and uniforms to radios and tents. Many of our members are passionate about history and often pick up items from Trade Me, fairs and arms auctions. Some people will donate stuff."
The society has members covering a wide range of military eras from the Romans through to almost present day in Afghanistan and counter-insurgency. It regularly takes the opportunity to provide re-enactments and a presence at events including the Cambridge Armistice Day commemorations and Anzac Day.
Frankton Thunder team organiser Ken McGeady said the military re-enactors would add an extra dimension to what should be an outstanding show.
"It is unusual to have military re-enactment in the city. This will be something special."
This Sunday, Frankton Thunder will bring together displays of custom, classic and muscle cars, drag machines, military vehicles, electric vehicles, the famous Britten motorcycle, jet bike and steam punk motorcycle along with a swathe of public entertainments including bands, the Miss Frankton pin-up competition, Photo Rama, Thunder Ink tattoo competition, street and steam-punk market.
Frankton Thunder 9.30am to 3.30pm this Sunday, March 10, Frankton, Hamilton, Monte Cassino re-enactment from 12.30pm.