ZACHARY - A plaque at Zachary's Port Hudson National Cemetery reads, "The muffled drum's sad roll has beat."

The cemetery was the site of a 48-day-long Civil War battle fought in 1863, where 3,500 Union soldiers and 7,500 Confederates clashed.

It is now home to a 19.9-acre cemetery that is still used for veterans and their families. Port Hudson is one of 156 cemeteries in 42 states and Puerto Rico for veterans.

"It's a place for veterans to be buried and taken care of," cemetery official Ryan Hannon said. "It's also a place where the veterans are taking care of their own."

Over 15,000 veterans and their families have been laid to rest at the Port Hudson National Cemetery.

If you aren't sure where your veteran has been buried, click here.