Federals: This term was used to refer to Union soldiers because they fought for the federal government of the United States.
Boys in Blue: This nickname was derived from the color of the Union Army's uniforms.
Yanks: This nickname was short for "Yankees," which was a term used to refer to people from the northern United States.
Damnyankees: This nickname was used by Confederate soldiers as a derogatory term for Union soldiers.
Blue Bellies: This nickname was derived from the color of the Union Army's uniforms.
Uncle Sam's Boys: This nickname was used to refer to Union soldiers because they fought for the United States government.
Government Men: This nickname was used to refer to Union soldiers because they fought for the federal government of the United States.
Lincoln's Boys: This nickname was used to refer to Union soldiers because they fought for President Abraham Lincoln.