The National Park Service has rededicated a cemetery in Washington that holds the graves of 41 Union soldiers killed during an attack on the capital during the Civil War.

The National Battleground Cemetery in northeast Washington was rededicated Saturday following major renovations at the site. The soldiers buried at the site were killed during the Battle of Fort Stevens on July 11 and 12, 1864. Confederate soldiers attacked the defenses of Washington in an unsuccessful attempt to capture the city.

President Abraham Lincoln dedicated the cemetery originally.