Who were the buffalo soliders?

Black soldiers serving the USA Calvary out west after the USA Civil War (1861 to 1865). They were called Buffalo soldiers by the Native Americans who were not accustomed to seeing Black people in a segregated USA, so they called them Buffalo soldiers, because of their dark skin.

The Buffalo Soldiers were formed by an act of Congress; Congressional Act of the 39th Congress, 28th July, 1866, section 3; there were 6 additional regiments formed, two Cavalry 9th and 10th, and 4 Infantry 38th 39th 40th 41st which were combined later into the 24th and 25th Infantry. They were then call, Colored Soldiers

The Buffalo Soldiers got their nick name from the Cheyenne Dog Soldiers in 1867. They called the Colored Soldiers-Buffalo Men because of their tenacity battle, color of skin and hair. The Colored Soldiers then called themselves, Buffalo Soldiers, a name the Colored Soldiers have carried for 4 generations; Indian Wars, Spanish American War, WW-I and WW-II.