Complex sentence: The American cemetery memorial marker has since been relocated to the museum at Andersonville, GA., and the remains of the fallen American prisoners (USMC, USN, USA, USAAF) have been reinterred in cemeteries throughout the United States.
Split into simpler sentences: The American cemetery memorial marker has since been relocated to the museum at Andersonville, GA. And, the remains of the fallen American prisoners (USMC, USN, USA, USAAF) have been reinterred in cemeteries throughout the United States.