Question

americans at war
in which branch of the service was the wac?
marines
air force
army
navy

Explanation:

The Women's Army Corps (WAC) was a branch of the United States Army. It was established to enable women to serve in non - combat roles in the Army. The Marines, Air Force, and Navy had their own women's service components (like the Women Marines, Women in the Air Force, and Women Accepted for Volunteer Emergency Service in the Navy), but WAC was specifically part of the Army.

Answer:

Army