A  history of the negro troops in the war of the rebellion, 1861-1865 : preceded by a review of the military services of negroes in ancient and modern times / by George W. Williams. New York: Harper & Brothers, 1888.
Main Library, E40.N3 W7 1969
This book, originally published in 1888 and written by a Negro Colonel and Judge Advocate in the Grand Army of the Republic, focuses on the Civil War, but it has an interesting section on the Revolutionary War. While there were no special engagements in which Negro soldiers bore the brunt, they participated in most of the battles of the war. While noting that in the beginning of the war there was dissent on whether the Negro should serve in the Continental Army, he says at the end of the war, "... it was the exception, not the rule, to find no Negro soldiers in any brigade of the army. Everywhere they won the confidence and applause of their white compatriots, and they did their duty so naturally and faithfully that their color was lost sight of."