Albert Dorsey Jr., a Jackson State University history professor, reads the names of soldiers and officers during a Remembrance and Libation Ceremony for Union troops killed or wounded in 1864 at Ross Landing, Arkansas, while he pours water into a pot of soil and grass at Vicksburg National Military Park, Feb. 17, 2024, in Vicksburg, Miss. The National Park Service has broadened how it presents history in the military park with more information about Black soldiers who fought for the Union during the Civil War. (AP Photo/Rogelio V. Solis)
Thelma Sims Dukes observes small American flags by grave markers of Civil War soldiers of the United States 1st Mississippi Infantry (African Descent) in Vicksburg National Cemetery, Feb. 14, 2024, in Vicksburg, Miss. Thirteen flags were placed at the graves of the Black soldiers killed in an 1864 massacre at Ross Landing, Arkansas, who were buried as unknowns but have recently been identified. As a child, Dukes walked to school across the grounds of Vicksburg National Military Park. (AP Photo/Rogelio V. Solis)
Beth Kruse, a historian working for Vicksburg National Military Park, tells attendees of the Remembrance and Libation Ceremony for Union troops killed or wounded in 1864 at Ross Landing, Arkansas, that she identified 13 Black Union soldiers through research of newspapers, military records and other sources, Feb. 17, 2024, in Vicksburg, Miss. The National Park Service has broadened how it presents history in the military park with more information about Black soldiers who fought for the Union during the Civil War. (AP Photo/Rogelio V. Solis)
Sara Sims places a small American flag by the grave of the Civil War soldiers of the United States 1st Mississippi Infantry (African Descent) in Vicksburg National Cemetery, Feb. 14, 2024, in Vicksburg, Miss. Thirteen flags were placed at the graves of the Black soldiers killed in 1864 in a massacre at Ross Landing, Arkansas, who were buried as unknowns but have recently been identified. (AP Photo/Rogelio V. Solis)
Thelma Sims Dukes stands in Vicksburg National Military Park on Feb. 14, 2024, and recalls that as a child, she walked across the Civil War battlefield to get to school. The National Park Service has broadened how it presents history in the military park with more information about Black soldiers who fought and died. (AP Photo/Rogelio V. Solis)
Vicksburg High School sophomore Daniel Drake plays Taps during a Remembrance and Libation Ceremony for Union soldiers and officers killed or wounded in 1864 at Ross Landing, Arkansas, at Vicksburg National Military Park, Feb. 17, 2024, in Vicksburg, Miss. (AP Photo/Rogelio V. Solis)
Vicksburg National Military Park Chief of Interpretation Brendan Wilson speaks to the small group of interested people who attended the Remembrance and Libation Ceremony for Union soldiers killed or wounded in 1864 at Ross Landing, Arkansas, at the Vicksburg National Military Park in Vicksburg, Miss., Feb. 17, 2024. The National Park Service has broadened how it presents history in the military park with more information about Black soldiers who fought for the Union during the Civil War. (AP Photo/Rogelio V. Solis)
A small American flag marks the grave of a Civil War soldier of the United States 1st Mississippi Infantry (African Descent) in Vicksburg National Cemetery, Feb. 14, 2024, in Vicksburg, Miss. Thirteen flags were placed at the graves of Black soldiers killed in 1864 in a massacre at Ross Landing, Arkansas, who were buried as unknowns but have recently been identified. (AP Photo/Rogelio V. Solis)
Thelma Sims Dukes speaks at Vicksburg National Military Park in Vicksburg, Miss., on Feb. 17, 2024, during the Remembrance and Libation Ceremony for Union soldiers killed or wounded in 1864 at Ross Landing, Arkansas. The National Park Service has broadened how it presents history in the military park with more information about Black soldiers who fought and died in the Civil War. (AP Photo/Rogelio V. Solis)
Vicksburg Mayor George Flaggs speaks during a ceremony at Vicksburg National Military Park on Feb. 17, 2024, in Vicksburg, Miss. The National Park Service has broadened how it presents history in the military park to include more information about Black soldiers who fought for the Union in the Civil War. (AP Photo/Rogelio V. Solis)
Small American flags are placed by the graves of soldiers of the United States 1st Mississippi Infantry (African Descent) by two Civil War reenactors and Thelma Sims Dukes, right, and her niece Sara Sims, second from left, in Vicksburg National Cemetery, Feb. 14, 2024, in Vicksburg, Miss. The 13 flags were placed at the graves of Black soldiers killed in 1864 in a massacre at Ross Landing, Arkansas, who were buried as unknowns but have recently been identified. (AP Photo/Rogelio V. Solis)
Thelma Sims Dukes speaks at Vicksburg National Military Park in Vicksburg, Miss., on Feb. 17, 2024, during the Remembrance and Libation Ceremony for Union soldiers killed or wounded in 1864 at Ross Landing, Arkansas. The National Park Service has broadened how it presents history in the military park with more information about Black soldiers who fought and died in the Civil War. (AP Photo/Rogelio V. Solis)
A Black Civil War reenactor holds on to his Union Army belt buckle during a ceremony of remembrance at the burial site of 13 soldiers of the 1st Mississippi Infantry (African Descent), Wednesday, Feb. 14, 2024, at Vicksburg National Cemetery in Vicksburg, Miss. Flags were placed at the graves of Black soldiers killed in an 1864 massacre at Ross Landing, Ark.,, who were buried as unknowns but have recently been identified. (AP Photo/Rogelio V. Solis)
Small American flags stand by the graves of Civil War soldiers of the United States 1st Mississippi Infantry (African Descent) in Vicksburg National Cemetery, Feb. 14, 2024, in Vicksburg, Miss. Thirteen flags were placed at the graves of the Black soldiers killed in an 1864 massacre at Ross Landing, Arkansas, who were buried as unknowns but have recently been identified. (AP Photo/Rogelio V. Solis)
A small pot of soil and grass representing the final resting place of 13 Union soldiers of the United States 1st Mississippi Infantry (African descent) is part of a Remembrance and Libation Ceremony for the men who were finally identified at the Vicksburg National Military Park, Feb. 17, 2024, in Vicksburg, Miss. (AP Photo/Rogelio V. Solis)
People at Vicksburg National Military on Feb. 17, 2024, in Vicksburg, Miss., attend the Remembrance and Libation Ceremony for those killed or wounded in 1864 at Ross Landing, Arkansas. The National Park Service has broadened how it presents history in the military park with more information about Black soldiers who fought for the Union during the Civil War. (AP Photo/Rogelio V. Solis)
Small American flags are placed by the graves of the Civil War soldiers of the United States 1st Mississippi Infantry (African Descent) in Vicksburg National Cemetery, Feb. 14, 2024, in Vicksburg, Miss. Thirteen flags were placed at the graves of the Black soldiers killed in an 1864 massacre at Ross Landing who were buried as unknowns but have recently been identified. (AP Photo/Rogelio V. Solis)
A visitor to Vicksburg National Military Park drives through the entrance of the Civil War battlefield, Feb. 17, 2024, in Vicksburg, Miss. The National Park Service has broadened how it presents history in the military park with more information about Black soldiers who fought for the Union during the Civil War. (AP Photo/Rogelio V. Solis)
Vicksburg National Military Park Chief of Interpretation Brendan Wilson, left, conducts a ceremony of remembrance with two Civil War reenactors and Thelma Sims Dukes, center, and her niece Sara Sims at the burial site of 13 soldiers of the United States 1st Mississippi Infantry (African Descent) on Feb. 14, 2024, at Vicksburg National Cemetery in Vicksburg, Miss. The flags were placed at the graves of Black soldiers killed in an 1864 massacre at Ross Landing, Arkansas, who were buried as unknowns but have recently been identified. (AP Photo/Rogelio V. Solis)
Vicksburg National Military Park chief archaeologist John Schweikart speaks about the importance of remembering the 1864 massacre at Ross Landing, Arkansas, and the Black and white Union troops who were killed or wounded there, during a Remembrance and Libation Ceremony at Vicksburg National Military Park, Feb. 17, 2024, in Vicksburg, Miss. (AP Photo/Rogelio V. Solis)
Thelma Sims Dukes, right, and her niece Sara Sims, left, are escorted by reenactors as they carry American flags to be placed by the graves of Civil War soldiers of the United States 1st Mississippi Infantry (African Descent) in Vicksburg National Cemetery, Feb. 14, 2024, in Vicksburg, Miss. Thirteen flags were placed at the graves of Black soldiers killed in an 1864 massacre at Ross Landing, Arkansas, who were buried as unknowns but have recently been identified. (AP Photo/Rogelio V. Solis)
The Mississippi African-American Monument, a 9-foot tall, bronze sculpture that rests on a pedestal of African black granite, and features two Black Union soldiers, and a common field hand, as photographed, Feb. 14, 2024, in the Vicksburg National Military Park, in Vicksburg, Miss. The sculpture honors the service of the 1st and 3rd Mississippi Infantry Regiments (African descent) and all Mississippians of African descent who participated in the Vicksburg Campaign. (AP Photo/Rogelio V. Solis)
Thelma Sims Dukes places an American flag by the grave of a Civil War soldier of the United States 1st Mississippi Infantry (African Descent) in Vicksburg National Cemetery, Feb. 14, 2024, in Vicksburg, Miss. Thirteen flags were placed at the graves of the Black soldiers killed in an 1864 massacre at Ross Landing, Arkansas, who were buried as unknowns but have recently been identified. As a child, Dukes walked to school across the grounds of Vicksburg National Military Park. (AP Photo/Rogelio V. Solis)