Complex sentence: The regiment trained in the New York area, performed guard duty at various locations in New York, and trained more intensely at Camp Wadsworth in Spartanburg, South Carolina, where they experienced significant racism from the local communities, and other units.
Split into simpler sentences: The regiment trained in the New York area, performed guard duty at various locations in New York. They trained more intensely at Camp Wadsworth in Spartanburg, South Carolina, where they experienced significant racism from the local communities, and other units.