Columbia subject headings:
Freed persons--History.
Military history, Modern.
Slave soldiers--History.
Slaves--Emancipation--History.
Soldiers, Black--History.
Harvard subject headings:
Freed persons--History.
Military history, Modern
Slave soldiers--History.
Slaves--Emancipation--History.
Soldiers, Black--History.
Princeton subject headings:
Military history, Modern.
Slave soldiers--History.
Slaves--Emancipation.
Soldiers, Black--History.