Memorial Day was first established after the Civil War, but has become a day to mark all those who died serving in the military.

As the nation celebrates its 250th anniversary, Judy Woodruff reports on a local project to mark our revolutionary origins and the final resting places of some of the nation's first veterans.

It's part of her series, America at a crossroads.

And today is Turkey Run.

Yep.

Turkey Run Cemetery, Fearfield County.

For nearly a year, Matthew Lucas, often joined by his wife Brenda,

has logged more than 6,000 miles on the hunt for specific markers of Ohio's

Revolutionary Era history.

So this one.

This has to be a CAR marker, 1776 marker.

The graves of Revolutionary War veterans.

James Lamb, 79 when he died.

It's a nice tone. Yeah.

Lucas is part of a statewide project of volunteers trying to mark all of the estimated

7,000 Revolutionary War veteran graves in Ohio.

At first, it popped up on my Facebook feed.

So I started doing some research on the project, what they were trying to do.

And I thought, well, I don't know how many Revolutionary War soldiers there are around here. But let me see

if I can find three. If I can find three revolutionary graves, I will be happy. And now you're at.

And now I'm at 490. Tunis and Francina.

At each grave, Lucas marks exactly where the site is using GPS, its condition, any markings,

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