Was NC part of the union army?

Answer:
No.

North Carolina was Confederate, though not as aggressively as South Carolina. When Sherman crossed into NC, he didn't feel it necessary to conduct punitive raids. (In SC, he'd burned down the capital city, Columbia.)
First answer by Jonathan Begg. Last edit by Jonathan Begg. Contributor trust: 151 [recommend contributor recommended]. Question popularity: 1 [recommend question].