People from all over the world traveled to Oklahoma for one of the world's largest paintball events.
It's called Oklahoma D-Day and participants use their paintball guns to re-enact World War Two invasion.
Tess Maune has a look.
Tucked away in the hills of Wyandotte-- a war is waging.
"We've got everything from paint grenades, to bazookas, tanks, grenade right here."
The allied forces are taking on the axis powers in the world's largest paintball event.
"We want to win. We want to hit 'em hard. We want to be a force to be reckoned with. We want our name known."
Gabriel colon is fighting for the Germans.
"We take it very, very seriously."
Dewayne Convirs takes it seriously too.
The battle is being fought on his land. From the sky you can see the set up is elaborate.
It all started 15 years ago-a way to honor his late grandfather.
"He was part of the 238th combat engineers and they built the first bridge at Normandy beach. So, I thought well I'll make a little moat go across the reservoir, and that way I can remember him. It'd be for me and it went from there to what it is today."
What it is today is as many as seven-thousand paintball warriors from 27 countries fighting to keep the memory of d-day alive.
"Coming out and playing this game just to honor them is the best thing I can think of doing for them."
John Rigby, originally from England, is visiting Oklahoma’s d-day event from California.
He's the commander for his 59-man unit on the American side.
He understands combat better than most...
Having fought for both the British and American armies.
"When you compare it to bullets and paintballs, there's no comparison whatsoever, it's just a fun game."
A fun yet serious game that's serving a bigger purpose.
"You know, freedom's not free. There's a lot of sacrifices in the world."
Oklahoma's D-Day spans eight days on 12-hundred acres of land.